Thumbnail caching problem - latest update

Directory Opus 13.10.4 (Beta) Build 9060 x64
OS 10.0 (B:22631 P:2 T:1) SP 0.0
image
Busy spinner spinning forever.
Thought it was my new script - a simple folder navigation widget - to trigger it Click a folder in the list then back - repeat a few times.
Decided to check normal navigation in the lister doing the same thing (after a restart - which stops the spinner) and the same thing is happening.

image

(does not happen with folder that has no images)

Update: turning off caching also fixes the problem
image

It's really unlikely to be related to caching.

Issue with generating thumbnails usually come down to bugs in external components which are triggered by particular files when they are asked to thumbnail them. (Especially if video files are involved.)