This message may occur if a user clicks on the binoculars icon beside the ZIP code or Postal Code field and AddressAccelerator is not installed. Try each of the of the following steps in order until the issue is resolved:
If Address Accelerator is present and this message occurs, please refer to the following Knowledgebase solution: Error: The serial number for your PostalSaver is out of date. Please contact Blackbaud for assistance.