cubase 6.5 reactivation

have been using cubase 6.5 update for about 6+ months, and today out of the blue when i went to start up, it says it is not activated. i went through the process to try to reactivate, and i get an error message that says that my eliscencer is not correct. i have entered the correct number several times off of my mysteinberg accoung. and yes, i installed the eliscencer update as well as cubase (i’m on 6.5.1). i have restarted, repaired the disc and its permissions and even reset my PRAM. i’m on a deadline and need to get working ASAP. HELP!!!

Been covered before. No such thing, activation occurs only once. Do a search for the solution.