No problem. I loaded the game and sat on the CTRL key for about 30 minutes skipping through on fast forward to get to the before last chapter.
I understand how frustrating it is not to have your old saves load. I usually try to NEVER update renpy until I finish a project, but my main drive (with renpy on it) started flaking out on me and I didn't have any choice. I had to start rebuilding it with a fresh install.
I hope you enjoyed the update.