Need for Speed: ProStreet

I bought NFS Prostreet to be able to LAN with my son.

On his computer he can run the LAN server and connect to it 

On mine, the file Rebroadcasterlan.exe closes and makes the server stop working

On top of this, the game itself will not try to connect to any LAN games (almost as if something is stopping any networking from taking place)

We are both on the same network - I have completely disabled my firewall 

I even completely wiped the computer and started fresh - the error still remains

I ran the rebroadcasterlan.exe file through CMD to see the error it was receiving and it provided: failurereason [CouldNotInitializeDataConnection]

Thanks

God Bless