Plutonium

I own the game from Steam and click the folder from steam library but every time I load BO1 it just gives me a black screen. Do I need to open it from Steam or from the Plutonium app itself?

Hello everyone, I have been playing for a few weeks now. Have been playing MW3, BO1, and BO2 with no issues but just as of a couple days ago every time I load into BO1 it freeze when it says connecting then will go black. Mind you MW3 and BO2 still work just fine. Any help with be greatly appreciated thanks!