[Solved] How to modify race models without break them?

[Big Bad Bot]

Hello everyone (again). I manage to edit a race model making some minor changes in a lot of models multiple times (human, worgen, dwarf, goblin, etc) and from time to time I get the same last outcome: a broken model.

- Sometimes it looks like a mess of triangulate faces afloat in the middle of the screen.
- Other times I get a perfect model until it makes one specific animation (or more) and morphs into a weird mess until the animation stops.
- The most common situation: same as above, but the client crash when this animation starts.


I think I'm doing something wrong or probably touching something that I don't have to. There's a way to "fix" almost the last two cases? Can someone give me some advice to doesn't waste work hours?

[Big Bad Bot]

I learn how to avoid a lot of this issues with this tutorial. Just to give a good answer to anyone who's asking same thing as I, here I go:

1- Try to locate the "corrupted" mesh. Import the original model to the  modified one, separe the uncorrupted mesh and move it to the armature of the modified model (as object). Delete the las imported "mess lose" model and rename the mesh with the original name.

1 bis- If you want just one part of every one of this two meshes, just delete what you want to add from one mesh and everything but what you want to add from another; select both and press Ctrl+J to fuse them in a single mesh. Rename it as the original mesh.


2- Select all the faces from a mesh, go to "options", "mesh options" and click "X Mirror". Now every change must be simmetric. If that doesn't work, press W and go to "Simmetrize", then try again with the X Mirrror. WARNING. SOMETIMES THIS CAUSES THAT KIND OF CRASH.