cannot delete or hide apps in itunes
I cannot delete or hide apps in iTunes. iTunes is open I've gone to the store and selected purchased, then select apps. Once I'm on that page I cannot select any apps to delete or hide. I've tried switching to the apps for iPhone and iPad as well as the ones "not in my library" and "All". apps do not respond.
MacBook Pro, OS X Yosemite (10.10.1)