Hii, this has happened about 5 times now, in the last three months or so I've been using the program. My current computer crashes a lot due to a hardware fault, but I'm stuck with that until I can afford a replacement. When I start up GMB, it's like the first run. My library is empty (I keep my music files on an external drive) and all preferences have vanished. The reason I like this software is that it's very customisable, and I spent ages setting it up how I like it!

Firstly, how do I back up my preferences to stop this happening? And secondly, can it be prevented?