You can retransmit check print records from within UltimateTax.
On the Bank menu select Maintenance/Setup and then Transmit Check Print Data.
If the issue persists, right click your UltimateTax desktop icon and select Properties. Click Open File Location or Find Target (whichever is present). Locate the TRANSMIT folder. Inside of this folder locate the file named S2Master (for 2012) and delete it. Then attempt to Transmit Check Print Data again.
This information applies to all years of the UltimateTax software.