Found a Fix:
First ensure that printing is working from Report Manager (open a report in Report Manager and print from there).
If it works go to Step 3, if you received the same error you need to install the following patches on the Report Server.
KB954606 - Security Update for SQL Server SP2
ReportViewer 2005 SP1
http://www.microsoft.com/downloads/details.aspx?familyid=82833F27-081D-4B72-83EF-2836360A904D
Download and install the following update:
KB954607 - Security Update for SQL Server SP2