diff --git a/ui/scripts/metrics.js b/ui/scripts/metrics.js
index 31553889152..1d5745b7024 100644
--- a/ui/scripts/metrics.js
+++ b/ui/scripts/metrics.js
@@ -113,92 +113,94 @@
                     data: data,
                     success: function(json) {
                         var items = json.listzonesresponse.zone;
-                        $.each(items, function(idx, zone) {
-                            items[idx].clusters = 0;
-                            items[idx].cpuusedavg = 0.0;
-                            items[idx].cpumaxdev = 0.0;
-                            items[idx].cpuallocated = 0.0;
-                            items[idx].maxCpuUsed = 0;
-                            items[idx].memusedavg = 0.0;
-                            items[idx].memmaxdev = 0.0;
-                            items[idx].memallocated = 0.0;
-                            items[idx].maxMemUsed = 0;
+                        if (items) {
+                            $.each(items, function(idx, zone) {
+                                items[idx].clusters = 0;
+                                items[idx].cpuusedavg = 0.0;
+                                items[idx].cpumaxdev = 0.0;
+                                items[idx].cpuallocated = 0.0;
+                                items[idx].maxCpuUsed = 0;
+                                items[idx].memusedavg = 0.0;
+                                items[idx].memmaxdev = 0.0;
+                                items[idx].memallocated = 0.0;
+                                items[idx].maxMemUsed = 0;
 
-                            $.ajax({
-                                url: createURL('listClusters'),
-                                data: {zoneid: zone.id},
-                                success: function(json) {
-                                    items[idx].clusters += parseInt(json.listclustersresponse.count);
-                                    var maxCpuUsed = 0.0;
-                                    var maxMemUsed = 0;
-                                    $.each(json.listclustersresponse.cluster, function(i, cluster) {
-                                        if (cluster.hasOwnProperty('cpuused')) {
-                                            items[idx].cpuusedavg += cluster.cpuused;
-                                            if (cluster.cpuused > items[idx].maxCpuUsed) {
-                                                items[idx].maxCpuUsed = cluster.cpuused;
+                                $.ajax({
+                                    url: createURL('listClusters'),
+                                    data: {zoneid: zone.id},
+                                    success: function(json) {
+                                        items[idx].clusters += parseInt(json.listclustersresponse.count);
+                                        var maxCpuUsed = 0.0;
+                                        var maxMemUsed = 0;
+                                        $.each(json.listclustersresponse.cluster, function(i, cluster) {
+                                            if (cluster.hasOwnProperty('cpuused')) {
+                                                items[idx].cpuusedavg += cluster.cpuused;
+                                                if (cluster.cpuused > items[idx].maxCpuUsed) {
+                                                    items[idx].maxCpuUsed = cluster.cpuused;
+                                                }
                                             }
-                                        }
 
-                                        if (cluster.hasOwnProperty('cpuallocated')) {
-                                            items[idx].cpuallocated += parseFloat(cluster.cpuallocated.replace('%', ''));
-                                        }
-
-                                        if (cluster.hasOwnProperty('memused')) {
-                                            items[idx].memusedavg += parseFloat(cluster.memused);
-                                            if (cluster.memused > items[idx].maxMemUsed) {
-                                                items[idx].maxMemUsed = cluster.memused;
+                                            if (cluster.hasOwnProperty('cpuallocated')) {
+                                                items[idx].cpuallocated += parseFloat(cluster.cpuallocated.replace('%', ''));
                                             }
-                                        }
 
-                                        if (cluster.hasOwnProperty('memoryallocated')) {
-                                            items[idx].memallocated += parseFloat(100.0 * parseFloat(cluster.memoryallocated)/parseFloat(cluster.memorytotal));
-                                        }
+                                            if (cluster.hasOwnProperty('memused')) {
+                                                items[idx].memusedavg += parseFloat(cluster.memused);
+                                                if (cluster.memused > items[idx].maxMemUsed) {
+                                                    items[idx].maxMemUsed = cluster.memused;
+                                                }
+                                            }
 
-                                    });
+                                            if (cluster.hasOwnProperty('memoryallocated')) {
+                                                items[idx].memallocated += parseFloat(100.0 * parseFloat(cluster.memoryallocated)/parseFloat(cluster.memorytotal));
+                                            }
 
-                                },
-                                async: false
+                                        });
+
+                                    },
+                                    async: false
+                                });
+
+                                $.ajax({
+                                    url: createURL('listCapacity'),
+                                    data: {zoneid: zone.id},
+                                    success: function(json) {
+                                        $.each(json.listcapacityresponse.capacity, function(i, capacity) {
+                                            // CPU
+                                            if (capacity.type == 1) {
+                                                items[idx].cputotal = (parseInt(capacity.capacitytotal)/(1000.0)).toFixed(2) + "Ghz";
+                                            }
+                                            // Memory
+                                            if (capacity.type == 0) {
+                                                items[idx].memtotal = (parseInt(capacity.capacitytotal)/(1024.0*1024.0*1024.0)).toFixed(2) + "GB";
+                                            }
+                                        });
+                                    },
+                                    async: false
+                                });
+
+                                items[idx].cpuusedavg = (100.0 * items[idx].cpuusedavg / items[idx].clusters);
+                                items[idx].cpumaxdev = (items[idx].maxCpuUsed - items[idx].cpuusedavg);
+                                items[idx].cpuallocated = (items[idx].cpuallocated / items[idx].clusters).toFixed(2) + "%";
+
+                                items[idx].memusedavg = (100.0 * items[idx].memusedavg / items[idx].clusters);
+                                items[idx].memmaxdev = (items[idx].maxMemUsed - items[idx].memusedavg);
+                                items[idx].memallocated = (items[idx].memallocated / items[idx].clusters).toFixed(2) + "%";
+
+                                items[idx].state = items[idx].allocationstate;
+                                if (items[idx].managedstate == 'Unmanaged') {
+                                    items[idx].state = 'Unmanaged';
+                                }
+
+                                if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Enabled') {
+                                    items[idx].state = 'Enabled';
+                                }
+
+                                if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Disabled') {
+                                    items[idx].state = 'Disabled';
+                                }
                             });
-
-                            $.ajax({
-                                url: createURL('listCapacity'),
-                                data: {zoneid: zone.id},
-                                success: function(json) {
-                                    $.each(json.listcapacityresponse.capacity, function(i, capacity) {
-                                        // CPU
-                                        if (capacity.type == 1) {
-                                            items[idx].cputotal = (parseInt(capacity.capacitytotal)/(1000.0)).toFixed(2) + "Ghz";
-                                        }
-                                        // Memory
-                                        if (capacity.type == 0) {
-                                            items[idx].memtotal = (parseInt(capacity.capacitytotal)/(1024.0*1024.0*1024.0)).toFixed(2) + "GB";
-                                        }
-                                    });
-                                },
-                                async: false
-                            });
-
-                            items[idx].cpuusedavg = (100.0 * items[idx].cpuusedavg / items[idx].clusters);
-                            items[idx].cpumaxdev = (items[idx].maxCpuUsed - items[idx].cpuusedavg);
-                            items[idx].cpuallocated = (items[idx].cpuallocated / items[idx].clusters).toFixed(2) + "%";
-
-                            items[idx].memusedavg = (100.0 * items[idx].memusedavg / items[idx].clusters);
-                            items[idx].memmaxdev = (items[idx].maxMemUsed - items[idx].memusedavg);
-                            items[idx].memallocated = (items[idx].memallocated / items[idx].clusters).toFixed(2) + "%";
-
-                            items[idx].state = items[idx].allocationstate;
-                            if (items[idx].managedstate == 'Unmanaged') {
-                                items[idx].state = 'Unmanaged';
-                            }
-
-                            if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Enabled') {
-                                items[idx].state = 'Enabled';
-                            }
-
-                            if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Disabled') {
-                                items[idx].state = 'Disabled';
-                            }
-                        });
+                        }
                         args.response.success({
                             data: items
                         });
@@ -301,92 +303,94 @@
                     data: data,
                     success: function(json) {
                         var items = json.listclustersresponse.cluster;
-                        $.each(items, function(idx, cluster) {
-                            items[idx].hosts = 0;
-                            items[idx].cpuusedavg = 0.0;
-                            items[idx].cpumaxdev = 0.0;
-                            items[idx].cpuallocated = 0.0;
-                            items[idx].maxCpuUsed = 0;
-                            items[idx].memusedavg = 0.0;
-                            items[idx].memmaxdev = 0.0;
-                            items[idx].memallocated = 0.0;
-                            items[idx].maxMemUsed = 0;
+                        if (items) {
+                            $.each(items, function(idx, cluster) {
+                                items[idx].hosts = 0;
+                                items[idx].cpuusedavg = 0.0;
+                                items[idx].cpumaxdev = 0.0;
+                                items[idx].cpuallocated = 0.0;
+                                items[idx].maxCpuUsed = 0;
+                                items[idx].memusedavg = 0.0;
+                                items[idx].memmaxdev = 0.0;
+                                items[idx].memallocated = 0.0;
+                                items[idx].maxMemUsed = 0;
 
-                            $.ajax({
-                                url: createURL('listHosts'),
-                                data: {clusterid: cluster.id},
-                                success: function(json) {
-                                    items[idx].hosts += parseInt(json.listhostsresponse.count);
-                                    var maxCpuUsed = 0.0;
-                                    var maxMemUsed = 0;
-                                    $.each(json.listhostsresponse.host, function(i, host) {
-                                        if (host.hasOwnProperty('cpuused')) {
-                                            items[idx].cpuusedavg += host.cpuused;
-                                            if (host.cpuused > items[idx].maxCpuUsed) {
-                                                items[idx].maxCpuUsed = host.cpuused;
+                                $.ajax({
+                                    url: createURL('listHosts'),
+                                    data: {clusterid: cluster.id},
+                                    success: function(json) {
+                                        items[idx].hosts += parseInt(json.listhostsresponse.count);
+                                        var maxCpuUsed = 0.0;
+                                        var maxMemUsed = 0;
+                                        $.each(json.listhostsresponse.host, function(i, host) {
+                                            if (host.hasOwnProperty('cpuused')) {
+                                                items[idx].cpuusedavg += host.cpuused;
+                                                if (host.cpuused > items[idx].maxCpuUsed) {
+                                                    items[idx].maxCpuUsed = host.cpuused;
+                                                }
                                             }
-                                        }
 
-                                        if (host.hasOwnProperty('cpuallocated')) {
-                                            items[idx].cpuallocated += parseFloat(host.cpuallocated.replace('%', ''));
-                                        }
-
-                                        if (host.hasOwnProperty('memused')) {
-                                            items[idx].memusedavg += parseFloat(host.memused);
-                                            if (host.memused > items[idx].maxMemUsed) {
-                                                items[idx].maxMemUsed = host.memused;
+                                            if (host.hasOwnProperty('cpuallocated')) {
+                                                items[idx].cpuallocated += parseFloat(host.cpuallocated.replace('%', ''));
                                             }
-                                        }
 
-                                        if (host.hasOwnProperty('memoryallocated')) {
-                                            items[idx].memallocated += parseFloat(100.0 * parseFloat(host.memoryallocated)/parseFloat(host.memorytotal));
-                                        }
+                                            if (host.hasOwnProperty('memused')) {
+                                                items[idx].memusedavg += parseFloat(host.memused);
+                                                if (host.memused > items[idx].maxMemUsed) {
+                                                    items[idx].maxMemUsed = host.memused;
+                                                }
+                                            }
 
-                                    });
+                                            if (host.hasOwnProperty('memoryallocated')) {
+                                                items[idx].memallocated += parseFloat(100.0 * parseFloat(host.memoryallocated)/parseFloat(host.memorytotal));
+                                            }
 
-                                },
-                                async: false
+                                        });
+
+                                    },
+                                    async: false
+                                });
+
+                                $.ajax({
+                                    url: createURL('listCapacity'),
+                                    data: {clusterid: cluster.id},
+                                    success: function(json) {
+                                        $.each(json.listcapacityresponse.capacity, function(i, capacity) {
+                                            // CPU
+                                            if (capacity.type == 1) {
+                                                items[idx].cputotal = (parseInt(capacity.capacitytotal)/(1000.0)).toFixed(2) + "Ghz";
+                                            }
+                                            // Memory
+                                            if (capacity.type == 0) {
+                                                items[idx].memtotal = (parseInt(capacity.capacitytotal)/(1024.0*1024.0*1024.0)).toFixed(2) + "GB";
+                                            }
+                                        });
+                                    },
+                                    async: false
+                                });
+
+                                items[idx].cpuusedavg = (100.0 * items[idx].cpuusedavg / items[idx].hosts);
+                                items[idx].cpumaxdev = (items[idx].maxCpuUsed - items[idx].cpuusedavg);
+                                items[idx].cpuallocated = (items[idx].cpuallocated / items[idx].hosts).toFixed(2) + "%";
+
+                                items[idx].memusedavg = (100.0 * items[idx].memusedavg / items[idx].hosts);
+                                items[idx].memmaxdev = (items[idx].maxMemUsed - items[idx].memusedavg);
+                                items[idx].memallocated = (items[idx].memallocated / items[idx].hosts).toFixed(2) + "%";
+
+                                items[idx].state = items[idx].allocationstate;
+                                if (items[idx].managedstate == 'Unmanaged') {
+                                    items[idx].state = 'Unmanaged';
+                                }
+
+                                if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Enabled') {
+                                    items[idx].state = 'Enabled';
+                                }
+
+                                if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Disabled') {
+                                    items[idx].state = 'Disabled';
+                                }
                             });
-
-                            $.ajax({
-                                url: createURL('listCapacity'),
-                                data: {clusterid: cluster.id},
-                                success: function(json) {
-                                    $.each(json.listcapacityresponse.capacity, function(i, capacity) {
-                                        // CPU
-                                        if (capacity.type == 1) {
-                                            items[idx].cputotal = (parseInt(capacity.capacitytotal)/(1000.0)).toFixed(2) + "Ghz";
-                                        }
-                                        // Memory
-                                        if (capacity.type == 0) {
-                                            items[idx].memtotal = (parseInt(capacity.capacitytotal)/(1024.0*1024.0*1024.0)).toFixed(2) + "GB";
-                                        }
-                                    });
-                                },
-                                async: false
-                            });
-
-                            items[idx].cpuusedavg = (100.0 * items[idx].cpuusedavg / items[idx].hosts);
-                            items[idx].cpumaxdev = (items[idx].maxCpuUsed - items[idx].cpuusedavg);
-                            items[idx].cpuallocated = (items[idx].cpuallocated / items[idx].hosts).toFixed(2) + "%";
-
-                            items[idx].memusedavg = (100.0 * items[idx].memusedavg / items[idx].hosts);
-                            items[idx].memmaxdev = (items[idx].maxMemUsed - items[idx].memusedavg);
-                            items[idx].memallocated = (items[idx].memallocated / items[idx].hosts).toFixed(2) + "%";
-
-                            items[idx].state = items[idx].allocationstate;
-                            if (items[idx].managedstate == 'Unmanaged') {
-                                items[idx].state = 'Unmanaged';
-                            }
-
-                            if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Enabled') {
-                                items[idx].state = 'Enabled';
-                            }
-
-                            if (items[idx].managedstate == 'Managed' && items[idx].allocationstate == 'Disabled') {
-                                items[idx].state = 'Disabled';
-                            }
-                        });
+                        }
                         args.response.success({
                             data: items
                         });
@@ -484,17 +488,19 @@
                     data: data,
                     success: function(json) {
                         var items = json.listhostsresponse.host;
-                        $.each(items, function(idx, host) {
-                            items[idx].cores = 0;
-                            items[idx].cputotal = 0;
-                            items[idx].cpuusedavg = 0.0;
-                            items[idx].cpuallocated = 0.0;
-                            items[idx].memtotal = 0;
-                            items[idx].memallocated = 0.0;
-                            items[idx].memusedavg = 0.0;
-                            items[idx].networkread = 0.0;
-                            items[idx].networkwrite = 0.0;
-                        });
+                        if (items) {
+                            $.each(items, function(idx, host) {
+                                items[idx].cores = 0;
+                                items[idx].cputotal = 0;
+                                items[idx].cpuusedavg = 0.0;
+                                items[idx].cpuallocated = 0.0;
+                                items[idx].memtotal = 0;
+                                items[idx].memallocated = 0.0;
+                                items[idx].memusedavg = 0.0;
+                                items[idx].networkread = 0.0;
+                                items[idx].networkwrite = 0.0;
+                            });
+                        }
                         args.response.success({
                             data: items
                         });
@@ -601,15 +607,17 @@
                     data: data,
                     success: function(json) {
                         var items = json.listvirtualmachinesresponse.virtualmachine;
-                        $.each(items, function(idx, host) {
-                            items[idx].cores = 0;
-                            items[idx].cputotal = 0;
-                            items[idx].cpuused = 0.0;
-                            items[idx].memallocated = 0.0;
-                            items[idx].memused = 0.0;
-                            items[idx].networkread = 0.0;
-                            items[idx].networkwrite = 0.0;
-                        });
+                        if (items) {
+                            $.each(items, function(idx, host) {
+                                items[idx].cores = 0;
+                                items[idx].cputotal = 0;
+                                items[idx].cpuused = 0.0;
+                                items[idx].memallocated = 0.0;
+                                items[idx].memused = 0.0;
+                                items[idx].networkread = 0.0;
+                                items[idx].networkwrite = 0.0;
+                            });
+                        }
                         args.response.success({
                             data: items
                         });