I had to install the newest Mekorma MICR download and a piece that was not intended to be installed had to be removed. It was the assign by checkbook feature.
The error is looking for that setup in the AP invoice window.
MICR2015R2 b 20 should be installed to run on the GP2015R2 version.
I installed the GP205R2 version and had to run the Grant.sql against the databases to finally get it to work properly.
I then had to delete the following rows from Dynamics.set
3183
Select by Checkbook
:C:Program Files/Microsoft Dynamics/GP/VPS.DIC
:C:Program Files/Microsoft Dynamics/GP/Data/VPSFRM.DIC
:C:Program Files/Microsoft Dynamics/GP/Data/VPSRPT.DIC