Hanging Up on internal errors

[JamesHBeckmann at aol.com]

Accessing the properties of a GROUP brings up its properties window (duh!)  
When I attempt to CLOSE the window I get all sorts of errors in the REV 
internal commands - Tabposition, RECclosewindow, and I hang in the properties 
window.  The ONLY exit to this has been QUIT.

What should I do?

Aside:  looking at an object's properties does not seem to inform me of which 
group it is a member - or is it there and I don't see it?

Jim