I've been trying on and off to compile an example using the MacZoop framework, using CW5 and I've had a lovely old time learning about Universal Interfaces and pre-compiled headers and such. I'm down from about 2500 error messages (about 4 actual problems) to 56, and they seem to originate with a missing file called UPaintEngine.h, which does not appear to exist, neither on my drive nor on the internet. Does that mean anything at all to anyone here?