I have the UK edition of the game but downloaded the US upgrade patch and a US crack so that I can play without CD (I do own the game..bought this morning as soon as released!) Strangely, the game seems to work...though I am only at the training stage. Do you think this will be OK or will I get crashes/problems later in the game?

I'm saying this 'cos I notice their is now a UK patch and its not too late to re-install the game and use that (though I don't see a UK no-cd crack yet).