1. Select File> Exit and Sign out of The Raiser's Edge and sign back in again. 
  2. If the merge document was copied from an existing document, make sure that the merge fields have been re-inserted from Add-Ins> Insert Raiser's Edge field. 
  • When inserting new Merge Fields, they must be selected from the Add-ins tab by clicking on Insert Raiser's Edge Field. Do not include these fields from the Mailings tab.  Merge fields should also not be copy and pasted in the letter. They must be reinserted from the Add-ins tab each time.
If issue persists, please follow the steps for the Error: Invalid procedure call or argument when running Donor Acknowledgement letters.