I looked into it. It doesn’t want to update because it’s not the same signature. Sadly, I lost the old signature/keystore file when I reinstalled everything, so whenever I update an “old game,” this issue will appear. I just created a backup of the current keystore because I learned from my mistakes. It’s unlikely I’ll update the other games, and MyCharaMansion, Chara Injector, and Chara CC are already on the new signature so your saves should be safe from now on. Thanks for the report.