I have an Access 2010 database with a form containing a tab-control. I've slowly been adding several stand-alone forms as pages on the tab-control. I just added 2 more, and all of a sudden the form does not display in Form mode. It doesn't even get to the Activate event.

I removed the last two pages - the ones that I had just added, but the form is still non-operable.

I've never seen this before and am stumped as to how to proceed. I'm getting ready to dump some basic data (numer & types of controls, etc) but in the meantime has anyone ever seen this before?

Thanks,

Tony