Perhaps you meant editing the scripts rather than replacing them; there was 3 issues that needed to be fixed just for the sex system to stop crashing, but there are plenty or other errors in the public version of the mod. Thus I recommended a second link that mentions that getting the mod from Github is the best approach at the moment.
There is nothing wrong with 411subdue.gd as the mod never alters that file. The file with the pertinent issues is newsexsystem.gd.