I seem to remember that the CMX file specs were publicly displayed int he proggramer info section. I cant seem to find them now there. Was wonderring since for shits and giggles I started writting a C++ 3dsMax plugin/importer where could I find the CMX file structure.

If you download te S2 version SMX meshes zip, you can find the specification in SMX.txt and PTH.txt.

Hey Flame. I dont need SMX now. I already made an implementation for SMX files. I need CMX.

Oh sorry, I misread that. I'm not aware of the CMX spec being public.

Yeah I seem to remember them beeing somwhere I dont know where.
I remember having a CMX importer for Max2010 but it was written in MaxScript and was painfully slow.
Whas hoping to improove on that and write a propper live for speed plugin for max.

here is CMX Importer: https://www.lfs.net/forum/thread/80064-Blender-CMX-importer-plugin
and in attachments its one made by Alex Evans (from 2004) for 3dsmax5, and also my 010 Editor template based on that 3dsmax importer data (cmx.h).

Wow Draggo thanks a lot this helps a ton.
Im supprised I couldnt find it.

I don't know if you have this already or if it helps at all but attached is the specification text file for the CMX files, updated in April 2011.

NOTE to anyone reading: CMX files are obsolete and I don't have any exporter or importer for them.