No render quality "very high"?

[Ashnurazg]

I switched from Ubuntu 12.04 x64 to Arch x64, but the problem with missing Very High Render Quality is still there.
I installed nvidia blob 304.37 on Arch.

When I manually set the Render Quality to the highest value (via game.cfg, diffed it with the game.cfg of windows client) the client notifies me that "libs/libglslang.so" can not been found and it disables all shaders. Where I get this library file (it works before the graphics update)?

Is the very high render quality still under development at Linux Regnum client?
(The thread where I posted this was closed ... so I re-posted it)