Problems Installing Zimbra Desktop on Vista

[newone]

I am using Windows Vista Home Edition and downloaded zdesktop_1_0_build_148_win32. I ran the installer and got the following error message box:
"c:\Users\myuser\AppData\Local\Zimbra\zdesktop\win 32\prism\xulrunner\xulrunner-stub.exe
Could not create this file. Shall I try again"

when I click on the 'yes' button I get the following message box:
"An error occurred: java.lang.ArraryIndexOutOfBound***ception: -381479009
Error log: C:\Users\myuser\AppData\Local\Temp\install4jError7 3927.log"

when I click ok the install wizard completes but the application does not install properly. Attemping to run zdesktop.exe fails and trying to run the uninstaller gives me the error "couln't load main class".

Any advice would be greatly appreciated.

[rick_deckard]

Are you running the installer as an Administrator? I had no problem installing on Vista and in general it runs *way* better than Thunderbird for me.

BTW, I did not need to run as admin. I just clicked and installed on Vista, but I have UAC disabled.