Unable to load client print protocol

Hi,

I'm running CRM 4.0 (rollup 7) on a Windows Server 2008 R2 64-bit server. SQL Server is 2008 and also Windows 2008 R2 64-bit. I get the error "unable to load client print control" when trying to print a report. I've found tons of advice regarding SSRS 2005, it's almost unbelievable 2008 is still affected!

Any ideas? I don't have KB956391 on either server or my workstation. And the CRM site is a trusted one.

Thanks,
Jari