[MusicMan]

try and change your liblist.gam at the line where it says gamedll. change that to gamedll "dlls\mp.dll" save it and start up a listen server in cs so it extracts the mp.dll to your dlls directory. now quit the game and change it back to gamedll "addons\metamod\dlls\metamod.dll" and see if it works if it doesnt try using the RB WIP Installer again now and then try again.

Hope this helps