I now need to go see if I need to update it. Cause when I tried that cause that was my second thought, it just kind of went 'wtf is this'. I swear I've done similar for like Cloud Meadow or something but this game is just kicking my ass for some reason.Fizel
[tech nerdism] It is not a "001" file - it is a "7z.001" file [/tech nerdism]. It is a 7-Zip multi-volume archive, so the unpacker handles those fine - there is no way it cannot, that is literally its "own" format. Unless - and this is a theory I am too lazy to verify - maaaaaybe if you have a very old version of 7-Zip, it could be unable to handle those. Although then the solution is obvious: update it.
So,
Install 7-Zip (which I understand you already have), and then back to my original post: put 001 and 002 files into the same folder, and unpack the 001 file.
Edit: yeah must have been slightly out of date. Ugh of course.