Wow. This is amazing.
I believe that this issue can also be remedied by deleting only the (name)_cache.dat file from the "%USERDATA%\Saved Games\Type Dreams" folder, too.
I'm so sorry your savedata was lost this way; did you keep a backup of the other .dat files from the previous build? Restoring all but the "_cache.dat" file might do it. Sometimes these issues are caused by "ROAD MODE" (which I'm taking out for now).
It's a major priority for me to keep this game's updates backwards-compatible because players' stats are so crucial. I love to see those upward-curving slopes on the stats screen!
Others have asked for a way to delete profiles, too. I'll include that in the next build.
Thanks so much for sharing these findings, Minnie! I'll be following your screenshots and combing thru the script to stitch this up.