hey , i bought myself modo 501, i had 3ds max trial before, how to make zbrush see modo ? i tried R button in go z menu , but even that i do have modo installed its in gray , and i cannot choose it.
thanks in forward 
so , any ideas ?
Do you have the latest GoZ installed? I believe it is needed for Modo 501?
After you install it, go to Preferences > Goz > path to Modo.
I don’t use GoZ yet, but I believe this is the proper proceedure.