A stack "revCursors" is already in memory.

[Paul Dupuis]

I have a new Livecode 9.6.9  install on a new Windows 11 laptop. It was 
working normally for a while, and, now, whenever I launch it, I get a 
warning message:

A stack "revCursors" is already in memory. The Livecode UI does not ... 
etc..

Can someone advise what I need to do to address this? I seem to recall 
this problem has been seen before.