Since updating to itunes 10.1 final and ios 4.2.1 final, I cannot print via my network. I tried to install manually, I tried to use different "airprint activators" but none of them work. Even my iPad crashes when I try printing from pages. It worked with itunes 10.1 beta 2 and ios 4.2 beta 3. Is there a way I can permanently use those installs instead of the final versions? In itunes 10.1 beta 2 there was actually a section where you could enable airprint and it worked. Any ideas?