Garageband 10.03

Just installed a new mini mac upgraded it to Yosemite. I opened GB and cannot select preferences or pretty much anything. It's all greyed out! While I am an advanced DAW user and computer tech, I don't understand why I can't even import a wave file. Everything's greyed out. I did see something about audiohelper the 1st time I opened it but now, it's not even looking for my component AU's on executing GB. Kind of stumped here. Any ideas would be greatly appreciated.

-- Rich D