AC server error

[Mardii_B]

Hey everyone im having a bit of trouble and im at the end of my tether. after 2 days of trying to work out the port forwarding on my router i finally managed to get my AC server to run and show up in the lobby, how ever now i get a lovely (sarcasim) orange triange beside the server box that reads "Internal error: object reference not set to an instance of an object." now this may be a really easy fix and ive just overlooked something but i just cant think what it could be now and im pulling my hair out can anyone point me in the right direction please before i give up and go back to playing nfsu2 to remind me of a simpler time. p.s im using content manager. thanks in advance