Selfie Band version 1.1 is now live in the AppStore. You can download it here: Selfie Band
This update fixes the crash that occurs when your band has no remaining space for new tiles and you try to install the Selfie Band tile.
Users with auto-update turned on should get the new version automatically but if not you can follow the link above to get the latest version.
For users impacted by the crash, you should now get an appropriate warning when you try to install onto the Band and there is no remaining space.