I don't think there's anything wrong with my .mozconfig... at least it doesn't seem like that to me.
And the "ac_add_options --enable-optimize"-switch shouldn't be a problem since I'm using .NET 2003 AND both computers are compatible with those optimizations.
I could post the entire build process, but I don't think anyone here wants to read a 4,500kb txt-file.
Unfortunately, I don't have MS VS at work, so I can't do any debugging, and the error report is practically useless.
It's wierd though, it works perfectly on the computer it was compiled on.
Maybe I'll try to compile without any options after the "enable-optimize"-switch later.