Hi airjaff, I'm afraid I have no idea what could be causing your problems.

One thing you could try is launching it from the console instead of from the GUI - it should print some error messages that way.

I currently don't have an N900 (mine broke in Australia a month ago and the replacement I finally got on Friday has a bad touchscreen - so until I get a working N900 again I'm a bit stuck.

Cheers,
- Micha.