grugi
From a troubleshooting perspective, what is "grade A bullshit" is how little information you provided - that error code can be ALOT of things, and you listed nothing else: no screenshots, no OS information, etc. You need to understand that nobody is going to throw randomly chosen "maybe"s at the wall to see what sticks. That error code alone is insufficient as it points in a general direction rather than a specific troublemaker to look at. Definitely need more info here.
Also, what exactly were you referring to when you said you "downloaded the missing files"? What files? That is a very suspicious phrase in the context of "I was missing some DLLs".