Trigger in Dialog crashes QP11

Hello,

We are using QP11 v11.0.0.300 on XPPro SP2

We have a data entry dialog box written in QP8.  It worked fine in QP8 and 
QP10.  It will work in QP11 if saved as a WB3 or earlier file.  After a 
minor change was needed, it was saved as a new file with the QPW extension, 
which now crashes QP11 every time the dialog box is opened (editing or use)

I have narrowed the problem down to Combo Boxes with a Trigger command.
The Combo Boxes have a list that was specified from a named block in the 
notebook (set just once).
When the user selects a choice within the Combo Box, the related Text Boxes 
need to display the updated information.
The Combo Box has these two links...
  on ValueChanged Send Value to A:A1 Value
  on ValueChanged Trigger EditField4 Init
The Text Box has this link
  on Init Receive Value from A:B1 Value
A:B1 is dependent on A:A1.  (i.e. @Left(A:A1,1)

Any use of Trigger in a QPW file causes QP11 to crash.  If saved as a WB3 
file QP11 functions properly.
Any ideas why?
Shouldn't "on Dynamic Receive Values" keep the Text Box updated?

TIA
Scott in Dunedin,FL