Neverwinter Nights suddenly not working

[David Shaw <dj.shaw@xxxxxxxxxxxxx>]

I've had NWN running on this PC just fine, but all of a sudden, it fails 
to run, giving me the infamous 'encountered a serious problem' dialog.

System is Ubuntu 10.04, wine 1.3.14, nVidia Corporation C67 [GeForce 
7000M / nForce 610M] (rev a2).

Full terminal output at http://pastebin.com/WmCEteZK

Any ideas?

Many thanks,

David Shaw