You sure this downgrader compatible with current steam version? Try this one - http://gtaforums.com...eam-downgrader/
I tried your version, but the old save files don't work with it...
There are a few minor issues that come with downgrading, however all can be fixed/prevented.
- Saved games from Steam copies won't work. You'll need to either convert them using this tool or use a Steam SCM and SilentPatch.
I know that. I had the 1.0 save file, not the Steam version. So I just recently solved the problem myself: I downgraded the save file by using GTA SA Save Game Editor. They're both 1.0 but somehow they are different. Weird.
Anyway, the game folder is a f*cking mess now, and all thanks to the f*cking update by Rockstar.