Occasionally I get the following error:
exception: treewin__CallUserCallback ex: CallUserCallback
I suspect it is coming from calling a nodefunction or evaluating a treenode in a module, but I cannot reproduce it reliably. Usually exceptions give a bit more information but this is really all I get.
Any idea how I could get more information about what specifically is causing the issue, or how to narrow it down? Am I even right about the cause?