Done! I deleted some unused files to ease the game's size. Probably ended up deleting that one in the crossfire.
Remember: You only need to copy-paste your old save files (Save01, Save02, etc.) which can be found in your current version's folder, inside the game's new version folder after you download it. This way you won't lose your progress and be forced to start again. Feel free to report any other issues you find while playing!