The Energon Pub

I know I;m a little late on this, but has anyone else had problems with the first movie game on 360? It was all working fine up until I played as the Decepticons and now the game always freezes when I play against Bumblebee as Barricade in the suburbs... it's definately the game because I got an exchange for the disc today [bought it second hand a few weeks ago]. I tried downloading an update from XBL but that did nothing - anybody got any ideas?