Hi,
Are all the services active as listed in:
http://scn.sap.com/thread/1419787
Also have you restarted ICM?
SMICM -> Adminitration -> ICM -> Restart
Do you have any related errors in you dev_icm trace file or in the dev_w trace file of the work process that you were using when you received the error?
Also any additional information in sm21 perhaps?
Kind Regards,
Johan