Crysis as it should be

Since it no longer existed, the German version of the Maximum Edition (or the price of existing version was much more expensive) I have resorted to the English version. In itself not a bad thing, the box is stable and was delivered quickly and without problems. Only from whatever reason, does the first part immediately. I install it, the home screen comes and I want to do ... and nothing. Crysis Warhead runs in comparison again.
Well perhaps there are solutions on the Internet, these two parts are better than part 2 and 3 all.