Unable to Edit Form in Designer
Speaking of Bill McCarthy, he also solved another recent problem for me, inadvertently.
I recently wrote an article for MSDN Magazine, ostensibly about setting Word properties programmatically, but from my perspective, it's really about object data binding.
Got the demo working perfectly, submitted it, and then went back in to modify the code. The form simply wouldn't load in the form editor!
Bill's blog includes a quick and easy solution. If you're attempting to follow the steps in the article, and get the same error, the answer is:
Open the Data Sources window before you open the form in the designer.
I've submitted (yet another, I assume) bug on this to Microsoft.
Because I've already received a few email questions about this, it seemed worthwhile to post a response here.