ITunes 12.0.1 not working after updating to Yosemite OS X

After updating my Mac to Yosemite OS X, iTunes app simply doesn't open.
I've tried deleting it (it's not possible) and when reinstalling it, nothing happens.
Any suggestions?

My iTunes launches, but I can't access any menu items. Prior tips have shown a GPU error may be to blame?
CPU spikes and stays high even though nothing ever loads.
/Applications/iTunes.app/Contents/MacOS/iTunes ; exit;
Returning 0x0. Advertising wake service for libraryIdentifier "*************77A".AVDCreateGPUAccelerator: Error loading GPU renderer

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ITunes 12.0.1 not working after updating to Yosemite OS X

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