Can't create a Subscription level in Membership plugin

I'm stuck with the membership plugin. I just upgraded to the latest version (3.0.2) hoping my issue would be resolved, but it was not. I've got it running on a WordPress (3.4) multi-site network with BuddyPress (1.5.6). My issue is that I can no longer add a membership level on any site within the network. Whenever I try to add a subscription level I get the following message: "Subscription not added." I am supposed to give a webinar on the membership component of our site at 6pm Pacific and right now I can't even do that. Can you please, please, please help me fix this. I am happy to pay you to give this top priority.