Index problem

[simoncn]

It can take quite a long time to scan 4 TB of new music. It sounds like you restarted the NAS before the rescan had completed. This would cause the error messages you are seeing.

If you did the rescan from MinimWatch, you need to wait until the minim icon changes colour from yellow to green (transparent on macOS). If you did the rescan from the MinimServer configuration page, you need to click the 'Refresh status' button periodically until the status changes from Restarting or Started to Running. At this point, the rescan is complete and you can reload the rescanned library into your control point if the control point requires this.