I've been loosing the ability to do anything in the PlayMaker. It basically freezes while the rest of Unity is working. I can't add or change anything in the window... (Widnows7x64, GTX285, 24G RAM, Intel 980x chip)
PlayMaker version 1.5.0f5
I've notices that this happens when PlayMaker is incorporated into the layout. It dis not happen before when it was used in a floating window.