I have a new MacBook Pro, all of a sudden iTunes won't open whatsoever. It bounces around a little and nothing happens. I tried to reinstall iTunes and I get an error message: Installation failed, the installer encountered an error, that caused installation to fail. Contact the software manufacturer for assistance. ALSO I tried to instal Netflix and I got the same error message when I tried to install Silverlight that is used to stream Netflix. HELP I am going crazy!
In Disk Utility there will be two options for your drive; one will have the model name (eg. "Toshiba 12345") and the other will be the volumen name (eg. "Macintosh HD"). Try selecting each one in turn and see whether the Repair Disk Permissions option becomes available.
If that doesn't work then reboot while holding Cmd-S at the boot chime, and it'll drop into text mode. Once you get a prompt (which from memory is "#" but might be "$"), type the following:
fsck -fy /
It'll go through some checks then return you to the prompt. You'll then be able to type either "reboot" or "restart" (I've forgotten which) to get back into the normal system, which with any luck will behave itself now.
Ok I tired the text mode and did everything and iTunes still won't open. It said Macintosh seems to be ok. My iTunes used to work perfectly fine, till about a week ago.. and it just won't open. Nothing that I try to install will install...