First off, it looks like you have more than one folder there. I suggest you sort by Path and process one folder at a time.
Based on the images and my own experiments, the template should be:
<Artist> - <Title>
You will have to deal with the info in parentheses after the title has been separated. The Additional Tagging Tools plugin would be helpful with that.
I'm not sure what the error means, but if you're still getting it after trying the template above, let us know.
Edit: changed the template because I think it was inaccurate at first. What is the significance of "SuicideSheep"? Is that an album name or what?