MC25 appears to be leaving a "low level" operating system folder lock when cover art is added from a file. The only way to clear the lock is to shutdown the MC. Has / is anyone else experiencing this ?
I've always thought that MC seems to hold a lock on files longer than is necessary, which becomes apparent through some odd behaviours. Maybe it happens to folders as well.
If you waited 15 minutes (yes, I've seen a lock last a looong time), does the lock clear and allow you to delete the folder?
To bring the files into MC JRiver you needed to set up an import stucture on your computer telling MC which folder to import from.
Unless you import a single folder, or right-click on a file or group of files, and select "Media Center > Import", which in neither case requires any import structure to be set up.
I believe that the "Rename, Move, & Copy Files" function causes the issue for me most often when I see it. But to be fair, if I have used that I do need to wait until all files are moved and the appropriate tags are changed in each, which can take some time and isn't obvious. In fact, while MC has finished updating tags, Windows may still not quite have finished, and may be the real culprit in the issue. Perhaps due to using non-removable disks and write caching. But the RM&CF does a lot of work before it finishes, so that could be the underlying issue.
I do see the same sort of issue with Windows Explorer being the cause, on very rare occasions.