Sorry, I don't know how to help you. Usually when I get a UI-related crash, I get a crash window that has more than the ufoconsole.log, and usually tells me where the problem is.
Work on this UI has moved into 2.5 and the code that runs the UI system is getting revamped, so I can't distribute the UI as a mod now in a form compatible with 2.4.
If you want to check it out, it's probably easiest to get a nightly download for 2.5 and try it out that way. Check the download page under "development (latest) for Nightly Builds.