Plutonium

I met this friend on MW3 and I told him to add me on the forum so we could stay in touch (he doesn't know how and said he'd look it up.) It sucks because I started following him but Ig he never figured out how it works. If only there was some way to reach him in game? When he's online again?

I tried to get it verified through the steam process but it didn't show up. Is there an alternative way to get the dll file?

It's not a steam game, I launch the application straight from the game file folder. Single-player worked fine until I installed plutonium. Hopefully this can be resolved~

So I found out about plutonium and its revived cod community (which is pretty nice I've been playing it for a couple of days). However, now that I try to play single player, it looks like this file has gone missing every since I installed plutonium.exe. please help huhu