Are your games still there? Do your games folders still exist?
If so, please uninstall the Player from Windows' Control Panel/Add/Remove Programs and then Metaboli Player (if it's there, I guess it should).
Once done, remove all the traces of the Player downloading and running this
However, this will delete all Yummy folders, so if your games have been stored inside one of these, you risk to lose them:
- C:\Users\[yourname]\AppData\Local\Temp\Yummy Interactive INC
- C:\Users\[yourname]\AppData\Local\Yummy Interactive INC
- Reinstall the Player connecting to your My account/My Games section.