Editing canned reports is not supported. 

Canned reports are linked directly to the database as well as specially coded tables.  The error is caused by the report expecting parameter input that was given when the original canned report was previewed from the system. 

Either create a data file from the Export module in Blackbaud Report Writer Database format and create a new Crystal Report template in Crystal Reports

or

Contact Account Executive to have an estimate created for a custom report , written with desired specifications.