Red Alert Msg, My collection has locked itself

Hi Mixvibes,This is a Red Alert Msg, My collection has locked it self and willnot let me open it, its error is:
Collection Opening Failed-Couldnot open passport for Mac, this collection is not valid or could be locked by another source!
I Have A MAJOR EVENT ON TOMORROW, Can you help me today?
Collection Opening Failed-Couldnot open passport for Mac, this collection is not valid or could be locked by another source!
I Have A MAJOR EVENT ON TOMORROW, Can you help me today?