Quote - > Quote - I didn't have any problems with the library and preferences once I copied my backed up ones over. However, in preview I no longer see shadows, which is a pain.

It sounds like the update reset your Preview settings. You should be able to change it back to use hardware shading and show shadows in Preview.

Personally I only use shadows in Preview to check the lighting, then turn them off again once I'm satisfied. It bogs down camera and dial performance too much for my taste to leave it on all the time.

That didn't seem to help.