Firstly sorry for my english. Today I wanted to check how's the normal map working.
So I made simply and fast modell in Blender, set up every texture. Now here's the problem.
With Simple texture option everything is working fine and perfectly. When I select the Complex map with normal everything is going into black with really low opacity and bad reflection on windows. The tangent info is already activated on that material. (The normal texture was generated on the well known online site.) Sorry if I missed something in the settings or anywhere.
I'm attaching some photos. Here you can see my files, setups in the CT and my settings.
Thanks for your answer!