>Unfortunately, I haven't been able to reproduce this one myself...however, you may want to try creating a subclass of CPageFrame as your second pageframe. I've seen some strange things in Visual FoxPro when a child PageFrame is the same class as a parent PageFrame.

The subclassing technique appears to have worked. I created a C_PageFrame class that is based on CPageFrame. Now the form opens like it should.

Thank you for the suggestion.