Let’s assume that you’ve created report for Dynamics CRM using Report Wizard and opened it with BIDS to add changes that are not available with Report Wizard (it could be anything – adding of images, change of fonts or layout…).
Once you’ve opened a report and applied change of course you want to recheck changes. In case you will get error that is shown on following screenshot you can find steps that will allow to build and test report in BIDs without any issues:
Return back to design mode, open Report – Report Properties.
Open References tab and change reference of assembly to existing on your PC.
PS you can download required assemby here: