The lcds "test drive" as distributed by adobe, with an older version of tomcat, works on the mac -- although I think I installed the linux version on linux and then copied the installed/unpacked dir over to the mac.
I think the problem you are running into is trying to get lcds installed correctly on a newer version of tomcat. There are some notes/hints in the livecycle release notes on how to go about setting up livecycle correctly. I remember doing a diff between a standard tomcat install and the tomcat provided by adobe to finally figure it out. You are likely to run into this problem running on all platforms, not just Macs. Good luck!
