SteamStartup() failed: Missing Interface


#1

What does this mean and why is it showing up?
The mod itself just won’t launch anymore.
What the heck is going on? :[


#2

So…after I restarted steam…
Every time I launch it says "Failure to start game. (missing executable)
I followed the steps to fix that but it’s not working.
So…
I can’t finish this game now.