I appreciate the effort on the part of the OP, but I don't really see anything in that ReadMe that is truly helpful today (could be missing something). Seems like the error codes ought to be, but how is the player supposed to for example equate "Post-save call back feature" (Error 13) to hey, your hard drive is damaged or you have a faulty patch job in place -- but no, we don't hear about those so much anymore. Error 16 is a tiny bit more common, but it isn't even listed.
Personally I think Crinrict and a few others did a much better job at cataloging these things and explaining what to do about various errors throughout the game's history. Her blog should be regarded as a highly useful resource.
https://sims3.crinrict.com/en
