I have 10.4.11 and installed the toolchain to the letter but whenever I try to build it always says build failed (1 error). It doesn't display whats causing the errors but the text names of the two frameworks are in red??? Can anyone help please, do I need to do the toolchain from the beginning again or is their a fix? Please Help and thanks in Advance! UPDATE: The UIKit.h is located in the /Users/user_name/iphone-dev/include/include/UIKit and this is what is giving me errors can anyone help out? I'm going to try and do the toolchain install over again and see what happens.