changelog's there now
Some info on the datafiles.cfg, rule of thumb: If the game wont start because of a missing file, check datafiles.cfg and remove that entry. If the game starts but you have a lot of missing graphics, check your folder if there are any .dat files or archives that are not listed in datafiles.cfg and add them.
Datafiles.cfg tells the client which files to load, if it cant find listed files due to them not being present or the entry being mistyped, client wont start properly.