It works now. I had to do a complete deinstallation of the RealVision ENB Mod. Thanks for your help.

Yes, i've installed RealVision ENB from http://www.nexusmods.com/skyrim/mods/30936/?. I guess that's the problem. I will try to uninstall it before installing Enderal.

Screenshots here:



Data-Folder:

Same grapic problems here. I've had several Skyrim-Mods installed, but i guess they're automatically deactivated by Enderal?