It's probably simply a crash. It's possible to see what happens if you launch the application from the command line (that is, in an xterm). How to do that can be found here: http://www.internettablettalk.com/fo...47&postcount=1
You'll need the application ID, which you can find with e.g. FileZ. When the program fails you will probably see a lot of messages in xterm. When I try to run avantgo, for example, I see a lot of info indicating why it crashed. (Not that it allows me to do anything.. but one could report it to Access on that feedback page of theirs).

p.s. For the record, what I wrote in that earlier post about problems with mathlib.prc doesn't apply anymore, Access fixed that in the second beta (the one that came out in May).