It means that you shouldn't extract the game in the same folder as the old version. The game might not work properly if you override or merge any old files with the new one.
I see, tho about that part about extracting to the same folder:
Currently, I have the 0.283 version in a folder named ADA(I intentionally removed the I). For the next version, should I make a new folder named ADA2 to insure the new version runs smoothly and so on?
