my iphoto won't open?

[Aisha]

My iphoto won't open.. I had an Apple genius move my iphoto library and iphoto application to my external hard drive to free up some space. Ever since then when I click on the iphoto icon the window opens but loads forever, when I open it using my iphoto library it either does the same thing or it says something about my iphoto being locked and I don't have permission to use it. With both I always have to end up force quitting cause it never loads.