I have a custom sales order invoice format created through the GER workspace. When I try to print an invoice, I get messages saying that the @ElectronicReporting:MappingToDestinationIsMissing and that there's a print management setup issue. Has anyone run into a similar thing? I'm able to actually generate the record with data from the selected record, but I get these messages (and the print management settings are ignored).
Messages:

I created a derived model mapping based off of the one from Microsoft, and created a new format "Customer invoice." The derived model has some updated bindings (not sure if this could be causing issues?)

I've also created an electronic reporting destination record for this custom format. I've tried setting the Settings to both File and Screen, but I get the error messages for both.

and have updated the print management settings to point to my new report:
