The order error is when the mesh basically turns into exploding mush. The wrong # error is accompanied by a nag. Wrong vertex order is usually brought about by welding, mirroring, or unusual paths through external apps where the meshes order is re written. Wrong number is caused usually by too many parts/groups being included in an export/import. These are all quick generalizations, Including my instructions above. Just for examples sake.

---

W10 Pro, HP Envy X360 Laptop, Intel Core i7-10510U, NVIDIA GeForce MX250, Intel UHD, 16 GB DDR4-2400 SDRAM, 1 TB PCIe NVMe M.2 SSD

Mudbox 2022, Adobe PS CC, Poser Pro 11.3, Blender 2.9, Wings3D 2.2.5

My Freestuff and Gallery at ShareCG