TOPIC: Lost ability to enter group registration in back end

I'm running DT Register 2.8.11 on Joomla 2.5.19 and DT Register 3.0.8 on Joomla 3.2.3.

I recently noticed I had lost the ability to enter group registrations through the back end. It works on the front end.

When I click the lick to enter a group registration on the back end, it asks me for the number of registrants.

I enter the number.

It then returns me to the Registration Records Manager.

Any ideas? I thought it might be related to a Joomla upgrade, but I just don't know.