Hi Finema, so just to make sure I completely understand when it happens it happens to all draw commands you try to run during that same program session, not just on random individual runs of a draw command? So about 1 out of 5 times you run MoI, no draw commands work during that whole program run is that correct? But it's always that the first point of the command can be placed but not any further points?

When it happens does the MoI window title bar look ghosted out or does it look normal with the 3 colored buttons on the left side showing with colors and not gray only?

One thing which might give me some information is on one of the bad runs, while you're in a draw command at the part where it's not working please go to Activity Monitor, highlight MoI in the program list and on the little gear menu at the top of the window choose "Sample process", then save the report that's generated and please e-mail it to me at moi@moi3d.com . There's a chance that may give me a clue.

Thanks, - Michael