The first uploaded 1.2 package wasn’t build properly and had some issues. I’ve seen one error report using that older package, but hopefully it didn’t get pushed out to too many people. It’s seriously unstable due to some configuration issues in the signing process. I noticed the issues immediately and fixed them.
The new package is a little over 900k. The bad package is about 670k. If you’re seeing a lot of crashes, specifically when opening the settings menu, uninstall Mimi and reinstall from Google Play.