problems with ipad and app sync
I bought a couple of apps with my ipad, and when I connect it to my imac, itunes tells me that these apps cannot be transferred to the computer because it´s not activated. But when I activate it, it tells me that it is already activated. I´m using only one appleID. I don´t know what to do.I bought keynote for ipad with my imac and I can´t transfer it to my ipad. I would be happy if someone can help me.
iPad 2, iOS 5.1