Connection create error in BPC10 NW

Hi there,

I am getting an error what I try to make a connection in the EPM addin for BPC 10 NW. I put in the server address and click connect. The username and password box apprears and once I press OK, I get the following error "The type initializer for 'FPMXLClient.Common.SAPPassportHelper' threw an exception."

I can put in anything in the login box, and it brings back the error (even valid credentials). Does anyone have any ideas what the problem may be. I am using Office 2010. Other colleagues are using Office 2007 and 2010 successfully with the EPM connection. It is SP5.

Thanks so much

Tim