Structure the folder into a BAIN ready archive and install it that way.
And there definitely should be meshes included with any body replacer.
And there definitely should be meshes included with any body replacer.
What I meant was that the original data folder did not have a mesh file and I don't know what went different with the BAIN installation but the MBP works properly now and I tried the OMOD installation (again) with HGEC and it is working fine as well. So now I am trying to figure what body replacer mod it was that messed everything up.