I think I got it.
MAKE SURE you load the /gallery/images and /forum/cpstyles folders in binary mode and the rest in ASCII mode. That's the only thing I changed and it seems to work fine now.
i solved the problem allready. I forgot to make a new map for batch uploading. The only time i still have that error is if i batch upload only one file. He still uploads is though so there's not much of a problem anymore