Hi guys,

I always get CTD with the Dawnguard.esm enabled if I enter the main menu. If I disable it everything is running fine and I can start the game.
Any help is appreciated.

Here are the mods I use:
http://www.imagebanana.com/view/vc0whhia/Unbenannt.jpg

Uninstall, not simply disabling them as they need to be uninstalled with their files removed, all your mods. If it works after that, you want this board: http://www.gamesas.com/forum/183-skyrim-mods/

I found the problem by myself. Not all files of the DLC were downloaded correctly fo whatever reason.