Cannot start Regnum since upgrade to Feisty (long error message [7 *.doc pages])

[Myxir]

Heigh ho!
This morning I made a critical error with my Dapper and I decided to upgrade to UbuntuStudio (it's Feisty Fawn 32 Bit).
I (yet) use an ATI X550XT graphics card. In dapper it went fine with Regnum. fglrxinfo tells me:

mcflow@errorkiste:/media/sdb1/regnum_online$ fglrxinfo
display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: RADEON X700/X550 Series
OpenGL version string: 2.0.6334 (8.34.8)

If I try to run the rolauncher, I get a hughe error output on the command line: (sometimes i can choose character, but after the loading screen it crashes.)

*I had to attach this too, it's too long for this post*

crash_backtrace_7244.log is attached. (btw: you should enable *.log for attachments, it told me "invalid file" )

ups, the error is hughe too.... 7 Pages in OO.org. øO (btw: i couldn't upload *tar.gz)

In save mode it runs fine.. but looks ugly^^. I hope there is a solution for this.

Regards