diff --git a/tools/appliance/build.sh b/tools/appliance/build.sh
index 44149c12254..2bfbbc0ea31 100755
--- a/tools/appliance/build.sh
+++ b/tools/appliance/build.sh
@@ -168,6 +168,7 @@ if ! ovftool_loc="$(type -p "ovftool")" || [ -z "$ovftool_loc" ]; then
     vboxmanage export $machine_uuid --output $appliance-$branch-vmware.ovf
     mv $appliance-$branch-vmware.ovf $appliance-$branch-vmware.ovf-orig
     java -cp convert Convert convert_ovf_vbox_to_esx.xslt $appliance-$branch-vmware.ovf-orig $appliance-$branch-vmware.ovf
+    chmod 666 *.vmdk *.ovf
     tar -cf $appliance-$branch-vmware.ova $appliance-$branch-vmware.ovf $appliance-$branch-vmware-disk[0-9].vmdk
     rm -f $appliance-$branch-vmware.ovf $appliance-$branch-vmware.ovf-orig $appliance-$branch-vmware-disk[0-9].vmdk
 else
diff --git a/tools/appliance/definitions/systemvm64template/postinstall.sh b/tools/appliance/definitions/systemvm64template/postinstall.sh
index b4b7f7b4160..413313c51e6 100644
--- a/tools/appliance/definitions/systemvm64template/postinstall.sh
+++ b/tools/appliance/definitions/systemvm64template/postinstall.sh
@@ -19,7 +19,7 @@ set -x
 
 ROOTPW=password
 HOSTNAME=systemvm
-CLOUDSTACK_RELEASE=4.5.1
+CLOUDSTACK_RELEASE=4.5.2
 
 add_backports () {
     sed -i '/backports/d' /etc/apt/sources.list