Trying to do something to a treeview node that has been freed
You're right, MaxGUI apps should not attempt to access gadgets once they have been freed. If anything, its bad practice.
Mark T:
Look in the official ide code for wherever it sync's datanodes & treenodes. I think you'll find a FreeTreeViewNode wrapped in a ?macos construct.
Just had a look now, and can't seem to find anything like that in maxide.bmx. Maybe it was one of the things that I ripped out when I replaced the debugger tree stuff, although I can't remember my changes having anything to do with the the creation/freeing of nodes (this was handled automatically by TNode iirc).