If I import the CAD with Datasmith the CAD in the scene looks good, like it should look. I need this object in an AR application for Android mobilephones. The first problem is, i cant build an working apk if datasmit is availible in Unreal, I get errors if i try to launch the application directly on my phone an if i build first the application and install it afterwards on my phone the app launches and closes itself after a second. If I disable the enterprise option in my .uproject file after importing the cad and restart the Unreal editor i can launch the app without errors on my phone but the cad is totaly broken. This happens not with all CADs, but I need this CAD. Changes in the importing options of datasmith with more or less polygons doesn’t change anything.