Severe bug with some types of Prefabs/meshes

[_Aka_]

Hi

After further investigation, here is my conclusion about this issue:

The issue happens because of the combination of two issues, one on me, and one seemingly on Unity:

• Issue A: The one on Unity: Your fbx model file has no tangents in it. Unity, following the settings on the model import settings, generates tangents for that model (based on its geometry). The issue is that those generated tangents are present in editor, but are not in the build. As far as I see it, this is a bug in Unity. I tried different variations of the import settings, and none solved the issue.
  

• Issue B: The one on me: when a mesh has no tangents, the deform mesh module throws exceptions.
  

Now, about the solutions:

• Issue A: the short term solution is to reexport the fbx file but this time with the tangents included. Also I recommend that you open a Unity bug report raising the issue.
  
• Issue B: I will soon prepare a fix for it Once prepared, I will send it to you via PM. If it works with no issues with your project, then I will include it in the next update of Curvy.