Essential Files

ASPRunnerPro application needs all generated files.

I beg to differ. There are several files I've found thus far that contain content not relevant to my project in any way. It's as if ASPrunner includes all the code (and files) for its templates whether or not the functionality is being used in the end result.
I realize that you don't want to come out and say, "Yeah, we give you lots of stuff you don't need." But in the end, denying it doesn't help anyone.

Yes, I know my answer sounds kind of dumb. Unfortunately it's true. All files (except templates_c directory with an empty file in it) are required.
I recommend you to check files.txt file in source directory. This file defines what files will be generated for each table. Here is the article that explains files.txt syntax:

http://xlinesoft.com/asprunner/docs/templa...ssing_rules.htm
Probably in your project you use features like Rich Text Editor that you don't really need.
I hope this helps a little bit.
If you have a question about any specific file I'd be glad to answer.