Are you entering the 510D payment amount in St. Schedule K screen 38 and the line that says Estimated Tax Paid With Form 510D? 

I can't get this to jive and customer support replied to our phone call with the form was correct and the matter was closed.

Line 20 of the 510 says "Amount TO BE REFUNDED (enter the amount from line 16D if line 13 is zero) yet it still puts in the refund amount even though line 13 is not zero! 

Anyway, if you have time to respond and I am not entering it correctly please advise. Thanks for all your help.