STAAD PRO Plate Error - BADLY SHAPED, WARPED, NOT CONVEX, OR NOT NUMBERED COUNTER-CLOCKWISE

Hello,

I created this model wit the STAAD Pro physical modeler, when I loaded it into the analytical modeler and attempted to run it I received the "Plate Error - BADLY SHAPED, WARPED, NOT CONVEX, OR NOT NUMBERED COUNTER-CLOCKWISE" error. I have reviewed the Plate Element Modelling Rules, however outside of the "Not numbered counter-clockwise" I cannot see what would be wrong. I have attached the input file:

Plate Model Test.STD

Thank you for your assistance, 

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