I followed all the instructions to the letter, hit Build, and had no error messages. My mod does not show up in the mod list when creating a custom game. I can see other mods with no problem, but mine is nowhere to be found. Anyone have any ideas? My mod was very simple, creating a clone of a ranger squad with 2 more entities in the squad, just to see if everthing would work.
Check warnings.log (My Documents/My Games/Company of Heroes 2/warnings.log, open with notepad) for errors. Search for the title of your mod (Control+F) and see if you can find something like "invalid file structure". If that's the case, then you haven't followed the instructions correctly.