Popup Button bug??

[Bob Sneidar]

Hi all. 

I have the command: 
popup pMenuButton at pLocation

pMenuButton contains:
button “mnuLocations"

pLocation contains: 
55,303

I am getting the error: 
stack "moduleCardBehavior": execution error at line 360 (subwindow: can't find stack or button), char 1

I assure everyone there *IS* a button called “mnuLocations”. What in the name of all <fill in the blank> is going on here??

Bob S