I have made an observation, which appeared very strange to me.
If your compression method looks something like this:
Code:
pzlib64+srep64+lzma2
or
pzlib+srep64+lzma2
You've to rename cls-srep.dll to cls-srep64.dll in order for it to decompress, or else, it'll get stuck after decompressing a few files every time. This is applicable to WPI, btw. I don't know how to work with any other scripts so I can't speak for the others.