Today we have published PS6.1.1 and LightFrame3.0.1. I have spent a lot of time working around a problem with 10.7, but the fix I did, unfortunately, hurt the performance of the underlaying graphics library, which affected both PS and LF. Today’s fix removes all the stability and performance issues caused by the previous updates.
P.S. Both build has been submitted to the AppStore, I expect them to appear in the beginning of the next week.