Blue Iris

All the sudden this morning I have no thumbnails of any type.

I can see triggers and play the clips on the timeline, but I see no thumbnails to the left.

I have done all the usual rebuilding and nothing happens. I do see the Error: DBRegenerate Error 000000b7 in the log.

The calendar does not have any red dots with the exception of today. New thumbnails are now being created.

Running the latest version 5.8.1.5 (12/5/2023)

Any suggestions would be greatly appreciated.

Have you checked if the recording files are actually there present on the drive itself?

Use Windows Explorer and navigate to the drive/folder and see if you play the clip directly by double-clicking one of the clip files?