While trying to loggin into the console.
Try to put the sepm server ip address instead of name ( in the console)
are you able to log in to the remote console?
http://sepm server name:9090
you may try running the management server configuration wizard once.
Cannot login to SEPM console "Unexpected server error"
http://www.symantec.com/business/support/index?page=content&id=TECH131523