Possibly compatibility problems with fastcraft?

http://pastebin.com/vL1f4iPv

Can you reproduce without fastcraft? If not, please report to Player and see what he sais. He messes with way to much, and since fastcraft is coded specifically to prevent others from understanding what it does, I cannot offer assistance in making them work together.

Thank you for the fast response, I'll try to contact him.

First try to make sure it only happens with fastcraft, and not also without! (Look at the same block)