Hello @Masaki_Okada,
Thank you for the detailed report. We have escalated this to our R&D team for investigation.
In the meantime, to get you back up and running, you can reset the ROCK database with the following steps:
- Stop RoonServer from the [url=https://kb.roonlabs.com/Nucleus_Web_Administration_Interface]ROCK Web UI[/url]
- Navigate to your [url=https://kb.roonlabs.com/Database_Location]ROCK's Database Location[/url]
- Find the folder named "RoonServer" and rename it to "RoonServer_old"
- Restart RoonServer from the Web UI to generate a fresh database
- On your Roon remote, tap "Go back" and connect to the new database
Please let us know if you need help with any of these steps!