The current install is a 3.1.1 open source install on fairly clean Debian 3.1 setup.
When I did the original install on this box I had to move zimbra after I installed it because I don't have enough disk space in root for it(it was a existing server in production at my hosting provider so I can't repartition it). I moved /opt/zimbra to /home/zimbra and then did "ln -s /home/zimbra /opt/zimbra" and Zimbra has run great.
When I ran the install script it bombed out when it couldn't find any of the previous files which I suspect happened because it erased the sym link and created a new directory at /opt/zimbra. Lucky I had back it all up first and could restore from my back. I know this is exactly a standard setup but I think it shouldn't be too hard to change the install script to work with the sym link. With Zimbra in production now I can't move it back to /opt because of the lack of disk space.
As you said this really isn't a setup we support. If you want to hack it you could try to edit the installer.
I'm not seeing where things are going wrong in the install scripts. Any pointers on where I should be looking? I'm hope not inside of the debian packages........though I have a feeling that's the answer though after reading the readme_source.txt document.
You could try running the installer with "sh -x install.sh" this will give you some more debug output.
Same problem here.
Hope I can restore my messages. :)
Let me know how it works out and if you would also post the script/list of commands you use to back & then restore that would be great.