- Operating System, Graphics card ---
Windows 10, 64 bit, GeForce GTX 1060
- Blender version with error, and version that worked ---
Blender 2.79 (sub 6), branch: blender2.8, hash: b618c185cb7 , never worked.
- Short description of error ---
Unwrap Error BlendStar.blend show how bad it is.
And the image .
- Steps for others to reproduce the error (preferably based on attached .blend file) ---
To reproduce this, just select all faces in the image then do an Unwrap ( any setting it's the same )
The only thing to avoid this is to triangulate the mesh then uwrap then remove triangles.
But the algorithm sometimes doesn't do good with ngons in meshes .