Can see Fields in Design View but not in Form or Layout view

Hi - I created a form and was editing it in design view, when I changed the

view to "form view" I was/am unable to see the fields within the "details"

section.  The only thing I see is the header.  All was working well, I had

toggled back and forth between the different views, but then this
happened.  
I checked to make sure that all the fields are "brought to the front" in
the 
layout and in the properties bar, I made sure that all the fields were 
visible.  This change occured when I added an existing field to the form,
I 
didn't change any other settings.  Any feedback/help would be appreciated.

Thank you!