I am having trouble setting up a parameter with a dynamic list. I have tried this in two reports on the same database and get the following error message when running the report:

Prompting failed with the following error message:'List of
values failure:fail to get values.[Cause of error: Error in file UNKNOWN.RPT: Failed to create the Crystal database connector.].'

Error source: prompt.dll Error Code 0x8004380d

Any ideas on how to resolve this?
Thank you