Unexpectedly Quit erros?


I've updated the OS X to 10.0.1 and now have a beta version of AOL, so I can finally check the internet part of this system out. But several programs keep quitting unexpectedly, such as AOL, Explorer, Napster and iTunes. At first I thought it might be all to do with the beta AOL and the internet, but with iTunes doing this too... now I'm not sure. I've deleted the music links within iTunes and rebuilt that part of it, but nothings changed, it keeps crashing. Usually those programs, especially Napster, will get this error right after I tell it to quit. Any suggestions? I'm not fluent on the Terminal, so if the suggestion uses that, please be detailed! Thanx!