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I found some light in this related question:
2. Is the face missing on both...
I had the same problem suddenly.
Restarting the computer worked for me.
I downloaded an FBX file from cgtrader.com and tried to import it in Unity.
First I did not have any textures or materials at all, but after some...
Same problem here, but using Vuforia with ModelTargets instead of Wikitude.
Most of the similar questions are for UI Canvas, and the solutions...
As others mentioned, one way to get it work using only free programs is:
* Blender: .stl to .fbx or .obj
If you need to convert first to .stl:
Great! It was a basically a problem of scale.
Thanks a lot!
Thanks for the suggestion.
When I change from Screen Space to World Space, the button does not appear at all, even if the object is detected.
I am new at Unity so this might have a very simple solution, but I have been trying to figure it out for hours without success.