stock equipment ..the fact i can run crysis and wars work fine ..so its not that.
what i did find was this.
i launched crysis and wars and then launched the mod internally.
the mod loaded , closed the old game..rebooted into MWLL ..but shortly after hitting the menu ..it produced this.(screenshot)

Now..i dont have my old crysis folder anymore ..as i got the whole crysis pack on steam ..so this is all via the steam versions.
If i use the MWLL launcher , i get no warning and the game crashes when i try and launch a created game or join a game.
So there must be a line of instructions gone awry in the installer ..but ive downloaded this mod 4 times (crysis 32/64 versions and wars 32/64 versions)
via the MWLL program , and ive checked the repair MWLL tool.. only a text file thats broken at the time.
i tried the -mod MWLL
the game loads to the MWLL menu...but app crashes on hitting the start created game.