>>Naomi,
>>
>>any chance of linked forms closing another form, thus causing the error ?
>>If so, you are smart enough to figure out one of the safe approaches
>>
>>regards
>>
>>thomas
>
>The only form that is opened is one form, AFAIK. Plus the toolbar, which may be referenced in the form. I'm not familiar with the application, it's not mine.
>
>I hope to tackle it in a minute once I finish with the reading of yesterday's messages + 42 new ones.

in your current code check

FOR lnCount = _screen.FormCount TO 1 STEP - 1
      assert _screen.FormCount=m.lnCount
      loForm = _screen.Forms[lnCount]  
...

but to be more secure go

Do while _screen.FormCount>0
     loForm = _screen.Forms[_screen.FormCount] 

regards

thomas

with a couple of exit branches