While I playing campaign in Nexuiz 2.3, I was shot by a rocket launcher, and the game froze. Then the not responding window showed up. When it finally closed down, I restarted the game, and in the screen shot for the level in campaign, there was a checkered grid,gray an white. So I closed down Nexuiz, and looked at the files. All of them were marked as system or hidden files, and had strange ASCII characters in the name. (like the boxes, and others, like the square root symbol.)
I am running Windows 2000
NVIDIA Geforce 5200
612 Mb RAM
2 Ghz Processor
(^^^If I'm missing something vital let me know)
However, these files are on an external USB hard drive, (60 Gb) Which could be the fault, but Nexuiz 2.1 works perfectly fine on my 1 Gb SanDisk Flash Drive.