Collider doesn't get created by the CreateMesh Module

[_Aka_]

Issue was discussed outside the forum. For future reference, the issue was due to two separate configuration errors:

1. In Create Mesh module: Marking the collider mesh as convex while it is not.
   
2. In Input Spline Shape: Setting the first and last CPs of a closed spline as Start and End CPs. This removes the "loopiness" of the closed spline.