This mistake came out of nowhere, it had never happened to me.
helpme
the folder structure is simple and you have it wrong
its
modfolder
-classes
-----models
-----trucks
-----etc
-meshes
-----models
-----trucks
-----wheels
-----etc
-textures
-----models
-----trucks
-----etc
you have
Man
Ladrillo
wich is wrong because the editor has no idea of what type of render to use if static mode,classes model or even a wheel render loader