No power 06 S Convertible/flashing red light
 

Anybody ever heard of this?
Went out to go to the store this afternoon and our biggest kitty (20 lbs) was up on the top of our convertible mini, and when we got in and tried to start up all power died and a rapid red blinking light above the "top up" button blinking...

Is there an alarm triggered by pressure on the roof where the car thinks a robbery is in progress, that type of thing? If so, does anybody know of the reset sequence?
Thanks,
Tim