No complex Collision on Mesh

Some strange is happens for my objects.
I import the object into the engine, but for some reason the Collision Complex is not created (or seen) for it.
I set visibility for complex collision, and nothing happens.
Why can that problem?

I Use 4.18.2 version

Visibility no matter. If you want to use complex collision:

  • open mesh
  • set collision settings from default to use complex collision as simple (something like this, from memory)

For simulate physic you still need simple collision created, but for world collision, after
this change will be ok.

Do you have the auto generate collision box checked when importing your mesh? Its under the mesh section on the import screen or at least it is on 4.17

223668-capture.png

No. I have not any complex collision. In view Box collision, when I check show complex - nothing to happen.
Now when I try to add that objects like new - all Collision generate correctly. And I dont understand what it was =(