Calibre Has Switched to a New Service and Retired the Old One
Calibre has discontinued its old library system and transitioned to a new service. As a result, users may be unable to access the library integration in versions GuideConnect 2024.05 or prior
An patch for this issue has been included in Guide Connect Update 2025.07.
If you have an up-to-date GuideConnect Upgrade Agreement, you will receive this update automatically.