Hi there, well, i am a beginner in Unity and SketchUp, i watched somed Videos how to export my Sketchup Files to Unity, and i did it in the exact same way (also i clicked on the options in 3D Exporter before i save the file and enabled/disabled some things).
Hey, that didn’t solve the Problem. Still exactly the same Problem. Doesn’t matter if the file is called FBX or .Dae. I also tested both variantes of FBX. With- and without two sided faces.