Pro-gress: to expand, grow, advance, become better.
So what is the opposite? Con-gress. We all know where that gets you.
I will second second Great Lakes' and A.C's posts. A miss spelled word or "tag organization not allowed" error in a config serves what purpose as far as performance goes? For missing textures errors, I usually just give it one and CMP shuts up. It has zero effect on appearance or performance of what I've done it to.
Other than the hassle I don't see any difference at all. But, that is true of my version, errors or not.
Dave.....