All of these problems in case when using multiple mods are used that supply the same resources (mesh, textures, sounds, etc.)
- In vanilla engine, it is possible only with using several bsa archives. When you use resources in uncompressed form, your have only one path: game directory "Data Files" and file system limitations and rules. File with same name will be rewrite on file system.
- OpenMW offers a multi-directory approach, which I like better, but the same problem remains: there is no way to know if the engine will use specific files or not.
- How OpenMW handles files (how VFS works)
- What resources each mod provides
openmw.cfg:
data="D:/Games/Morrowind/Data Files"
data="D:/Games/Morrowind/1"

What do you think, it might be useful to someone besides me?