Sorry, I don't know anything about Fedora, never used it. The usual culprits come to mind, though:
- 3D acceleration activated - for 32bit, too, if you are on a 64bit system?
- All needed 32bit libs present and in versions matching your system?
- nwmovies, nwmouse etc. present in your copied nwn folder?
The latter need some special 32bit libs usually not present on 64bit system with multi arch support - best to disable them temporarily.
Greetings
Skildron