Sorry, guys, i haven't been around lately.
I'll look into this right now.
Cheers!
EDIT: I know what the problem is. I used 7zip to compress some of the files into zip format using bzip2 compression method. I don't remember which files I recompressed, but this is the only thing I did differently. I'll do some more testing and recompress the files into regular zip format.
Cheers!