Mumble Overlay on Kubuntu 12.10 didn't work

[RunTMC]

Hi DSWP's,

i have a problem with the mumble-overlay since i've upgraded to Kubuntu 12.10.
The following message appears: symbol lookup error: /usr/lib/mumble/libmumble.so.1: undefined symbol: glPopClientAttrib

Any ideas how i can solve the problem?

[natirips]

Sounds like an OpenGL-related problem. Did your graphics card driver (version) change in the update?

P.S.: WARNING: I take no responsibility if changing a graphics driver under *buntu renders it unusable (warning based on personal experience which partly made me switch to Debian).

[RunTMC]

Yes, the graphic-card driver has changed. Maybe I'll try the driver from the AMD Website. Maybe!!!!
Thx for your advice.