Right-click and context menu

This started happening several upgrades ago (I now have 11.0). When I am viewing a list of files in Detail view and right-click on a file, DOpus gives me the "busy" cursor for perhaps 25 seconds, sometimes more, before displaying the context menu. It usually does that ony once for every instance of DOpus I have open. Today it was more like 60 seconds delay; I closed DOpus while this was going on and it crashed so bad I had to reboot. I tried killing the two processes, but that didn't work.

Any ideas? Thank you.

Please see Crash, exit or high CPU usage when right-clicking certain files