This error often shows itself as an error on clients where the user does not have administrative permissions to install the updated control. In this update, the files on the server are not updated though.
The fix is provided through the installation of Cumulative Update Package 2 for SQL Server 2008 SP2. Available here: http://support.microsoft.com/kb/2467239
If you can’t wait to test the package before deploying to your servers, and you need the RSClientPrint packages then I have uploaded them to my site and you can pick them up here. These are the latest versions included with SQL Server 2008 SP2 CU2.
Extract the 3 files and put them in the ReportServer\bin directory of the Report Services instance on the server. You can also package them and install them to clients where the users do not have permissions to install the control themselves.
Hope this saves some people some time hunting for the files.
SQL Server 2008 SP2 Cumulative Update 6 also updates these files. The RSClientPrint.dll file has a version number of 10.0.4285.0
Download available below