Plutonium

I'm getting the same error. I don't have a fix though

Resxt Oh wow okay thank you for telling me. I've never played T4 so I didn't know. I just googled it and it says you have to play the campaign. Thank you!

When I open plutonium launcher and try to click on the co-op/zombies option, it will open T4 perfectly fine, but only co-op and campaign are there. Nothing related to zombies shows up. Edit: This is an error that I see in the game code attached