What database are you using? Search their WEB site for that error message, should give you a clue as what the problem is.
Ludek is assuming it's MS SQL Server.... And yes I agree, don't keep those Verify options checked on. CR assumes the reports and database stay as is when put into production.
You may want to simply open each report, set location and verify the database and then save the reports so that all references are updated to current RPT version.
Don
