Installed 10.5 (4779) today. First task, to correct the dates in several folders of JPG pictures, one folder at a time. First six folders perfect. Then in two folders the same error - one file renamed from dsc31619.jpg to dsc31619.jpg5696 (a different root name in the other folder). The original file name still exists but is zero size. The new file contains the picture and displays correctly on clicking the name. There are 58 files in folder and I am changing only the year in fields Date digitized and Date taken. I should emphasize that in both folders showing this problem the addition to the file extension was the same, 5696.
Now returned to Opus window and it immediately ran the Metadata procedure again (without any click from me). It has produced another misnamed file but also a report - 'An error occurred setting metadata 'dsc31627.jpg'. Access denied (05).'. The misnamed file is the immediately preceding file dsc31626. Both these files had already been updated previously. No other Opus activity took place between these two incidents.
Running XP 32bit. Most files have the Read only bit set but Opus doesn't seem to mind that for a metadata update.
Immediate solution: delete the original file and rename the new, but there does appear to be a problem somewhere.
Tim Boddington UK