OK i will try to help you. It appears that you are having some serious script problems with your MAC.
The first thing that I would do is to clean your Mac. There is a little neat tool that will do the job for you. It's a software called Applejack and youcan down load it
here. Read the instruction carefully as it would only work in single mode. The instructions will tell you what to do.
Before you run the software I would uninstall Zimbra and the Server if you are using Zimbra Colloboration Server.
After running Applejack you can also run the disk utility Tool in applications.
When you are all done, turn you Mac off and wait for about one minute.
Restart your Mac and then install Zimbra.
Keep us apprised.
Iz Teremka Kennel
Using Mac O/S V 10.7 Lion