My little brother bought himself the RPG epos Gothic III and came to me with a rather interesting problem:
After a clean install the game wouldn’t start in full screen mode but rather restrained itself to a 1024×768 window.

I found the glitch pretty fast, a configuration file caused it:

fullscreen = trues

Changing the trues to true did the trick and everything went smoothly.

Bugs are quite common in computer games, but how on earth someone can ship a game with a so apparently wrong configuration file is beyond my knowledge. Sorry to say, but someone failed when a vital config file contains a typo!