Zimbra Desktop won't start - OS X Lion

[Skippy]

Hi there. We're trying to install Zimbra Desktop (newest version) on a brand new Mac Air running 10.7.2 (Lion). Installation seems to work OK, but running the program doesn't -- you just see the icon for a moment, then it disappears. No error, nothing, just won't run. I'm not sure where to look for logs -- there are no files in the log folders in User/[username]/Library or in /Application/Zimbra Desktop. Any advice?