Enterprise Portal Configuration Wizard Error "ClrObject coundn't be created"

I try to install Enterprise Portal for AX 4.0 Service Pack 1 along with Windows Sharepoint Services 3.0 on a Windows Sever 2003 with SQL 2005.

After setting up all the .Net Business Connector settings I try tu run the EP Configuration Wizard. After completing the Wizzard I get the error messages “ClrObject isn’t initialized” and “ClrObject coundn’t be created”.

Does anybody of you have an idea how to solve this problem?

Thank you in advance!