I'm not entirely sure what the problem is but your English is better than my German so I can't complain. I'll go through what might be the problems.
Did you install EB 1.1 before EB 1.2? Because EB 1.2 is a patch, not the entire game. You need to install EB 1.1 and then EB 1.2 on top of it.
Did you install all the fixes?
Are you just getting stuck on the EB loading screen and it's taking ages? Because it's meant to; the game is huge, and takes a long time to load up, much longer than any Vanilla game.
Check out the EB FAQ for more Q&A's or anything you don't understand. Hope this helped.
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