[KWo]

Go to Your liblist.gam and change for the moment Your liblist.gam in this way:
change the line:
gamedll "addons\metamod\dlls\metamod.dll"

to the line:

gamedll "dlls\mp.dll"

and check, it it will start for You OK.
If no - it means You have messed up Your CS (need reinstall).
If so - change back the line (to call metamod.dll) and try again.