I got hold of class's crack and applied it to x-tension v1.1 (cracked ver) and I've been playing it for a few hours now with no problems. Everything works including all ranks improving. The class crack has is NOT the 1 available from gcw but it is the same size, the file is xt20.ace. I tried the 1 from gcw and all it does is create an uncracked v2.0.

hope this helps u guys