10.0.4 --> 10.1 - Screen Saver preferences hung


Under 10.0.4 I added a bunch of screen savers to my global /Libraries/Screen Savers folder.

When I opened my Screen Savers preferences panel under 10.1 it hung trying to Test one called Words. Even logging out and rebooting would not bring this control panel back.

Finally I had to remove the offending screen saver module from /Libraries/Screen Savers for it to work again.

I gess I'm mentioning this so that you will all check your screen savers carefully before falling into the same trap...