I had the same issues with the imageclip. Like Louis said, press at a heavy pressure. On my press I set it at 55psi. The first press is for 30 sec @ 360*. After the shirt cools and you peel the transfer, I stretch the shirt just enough to see the cracks develop and then press again for about 10 sec's with parchment paper. Then peel immediately and stretch the shirt carefully while it's still hot. This paper does seem to be prone to cracking more than some of the other papers, and the process is more work with the laser step. On the plus side, not having any emulsion window is very, very nice and worth the extra steps in my opinion.