Awesome. You've made some good changes. But a few more suggestions...
In the ZIP file there's a compressed folder called Colony Pack whatever. I would just remove that step alltogether and leave the zip file containing the Installation.txt, credits.txt, c_sp001.dll, c_sp002.dll and cow.map with nothing else. This way a user can download the file, right click on it and simply hit "Extract Here" without having to move files around and whatnot. Not to mention, the file size ends up being reduced further (not needing to have identicle copies of the install.txt/cow.map files).
Map names are definitely better than before...
You may also want to condense the install/credits text into a single ReadMe.txt file (which I can give you the same template that I use which is straight forward and easy enough to work with).
Otherwise it's nice to have something new!
EDIT: spelling mistakes