I'll try to explain as much as I can:
I use this for months now and I have some problems with it sometimes.
Like whenever I go to my friends server that also has this mod,play with him,have fun then leave his server to play by myself, It just stops working. (Like 39% of the time)

My steam uninstalls itself for some reason and when I go install L4D2,And Reinstall my mods again,Host a singleplayer server to see if they work and then try to use the admin menu,Wont work (Like 67% of the time)

Maybe it could be my other mods? (Vocalizer,Thirdperson,ETC) But if someone could help me with my issue, that would be wonderful

No seriously help