Are you getting a Crystal error prior to getting the SQL error? If so, what is the Crystal error number and what does it say?
Are you running a template that contains a select statement, or are you simply running a select statement? Is the select statement pointing to a date or time field? If so, could you provide the value you're using to select on the date or time field? Are you using "between" in the selection? [We used to have problems in V6.X with date syntax on select statements that generated errors like this.]
Is this an error you only get on one workstation when you run it or do all users get the error on this report regardless of the workstation? Do you get this error on every report run on this workstation or just the one report?
Is the report a generic report or has it been customized? If standard, what is the report number? If it has been customized, are there custom fields that are date/time related?
This kind of info would help us to identify where to look to solve your problem.
Best regards,
Gail J-N