Plutonium

@KiTiTy The launcher updates itself when you start it. If it's not doing it this means you pinned the launcher while it was running. To fix this unpin Plutonium from your taskbar, make sure Plutonium is closed and pin plutonium.exe again. If this still doesn't work maybe getting clean files from the install guide would fix this.

@KiTiTy the only modification plutonium does to the base game files is remove steam_api.dll so if you want to play pluto and steam mw3 on the same pc i'd recommend making a copy of your mw3 folder to use for pluto. Other than that it doesn't touch anything so that must be caused by something else.