idspnAppName) can't use the current notebook cache because it's from a pre-release version. If you continue, you will lose ...

(!idspnAppName) can't use the current notebook cache because it's from a pre-release version. If you continue, you will lose any changes to online notebooks that haven't been synced. We're sorry.To keep your changes, please click Cancel. Then start your pre-release version of (!idspnAppName) (you might need to reinstall it) and fully sync before upgrading again.