Hi loaded 10.0.327 onto my mac pro 2.66 dual core, OSX 10.5.6, Nvidia 7300GT As soon as you resize the main window a tool menu pops up in the bottom right corner and will not go away. In fact multiple copies appear. Also resetting the window by pressing the green button top left produces another tool menu. Now the software freezes with ‘Fatal Error’ when shutting it down.