You have something in your installation I do not know, and it is causing problems:
(02/28 07:37:45) UamMod_AgeInfo loading data
I have no idea what that "AgeInfo" UamMod is, it is not part of the source code Dustin put into SVN. However, the log entries indicate that it messes with the xLinkMgr data, obviously in a way that no longer works. I can not possibly support external usage of internal interfaces, and if I do not even have the source code of the offending module, I can't even notice it. Could you please uninstall the KI plugin (by deleting "UruAgeManager.pak" from the python folder, or using Drizzle), or at least edit the config/UamModules.txt and remove the AgeInfo module, and test again?
Also, your installation is definitely not a clean installation: According to the logfile, it contains some ages which are not served by the UAM (for example, testage or Yinfara). Due to the way Uru works, any age can cause arbitrary breakage on every other age. Most ages don't do that, of course
but it still makes debugging more complicated.
EDIT: I found out where that AgeInfo module comes from, obviously it is part of the latest UAM KI plugin, but the source code was never released.