What Not to put in Res Files
1. .ztmp file references - ztmp files are compressed files that are created by a server when players download files directly from a server (as opposed to fast download from a servers webspace). They are meant to speed up downloading from a server. Occasionally I have seen .ztmp files included in a mappers file structure and download and res file. I beleive eveything will work better if you don't include ztmp files in your map package or res file.
2. .txt files - you should not be putting any txt files in the res file, unless the txt file is required by the program.
3. .zip files - or any other compressed files. This would require the recipent of the files to open up and extract stuff within the file.