My fix for sync problems with Mac X.2
Here are the problems I had after installing X.2. (Transport error, unable to sync after X.2 install, and unable to locate Palm Application in X.2, Unable to uninstall/install Palm Dekstop 4.0)
Called Palm support and here is what they told me:
Boot into 9.2, start Sherlock, search your HD for "Palm", Delete everything that Sherlock finds with the "Palm" search, boot back to X.2 and re install Palm Desktop.
After doing this I was able to sync. I did have to re install some of my conduits (ie Pocket Quicken). Also I am not use a Keyspan adapter. Hope this helps.