Contribute "Unable to set template properties"

Hi,

I set up a "master" template with an optional region, the control of which I passed through to a nested template. I added another optional region to this nested template (so 2 total, with 1 being "inherited" from the parent "master" template.) I created a page based upon this nested template, and using Dreamweaver, I'm able to modify the "template properties" (string params that set the ID of 2 different divs.)

However, when I enter "edit" mode on the page in Contribute, the yellow notification bar says "Some ... blahblah ... are only editable through <a>template properties</a>" When I attempt to edit these template props by clicking on this link, Contribute throws a modal reading "Unable to set template properties."

Any similar experiences and/or work-arounds?

Thanks,

Ted