I keep getting "[Errno 9] Bad file descriptor"


I’ve been looking for a little bit for a solution to the problem in the subject. I’m trying to tag and rename a bunch of songs I found on an old iPod Nano, all of which play perfectly well, but all of which are also given that garbage naming scheme designed to presumably prevent easy sharing.

So I successfully import the files to Picard by dragging and dropping the folders, I successfully cluster them, I successfully use the lookup tool on the new clusters, but when I try to save anything in the right pane, I get the error in the subject line, full text being: " (95%) (error: [Errno 9] Bad file descriptor)"

The error log itself is showing:

E: 16:37:31,680 util.thread.run:51: Traceback (most recent call last):
File “picard\util\thread.py”, line 47, in run
File “picard\file.py”, line 211, in _save_and_rename
File “picard\formats\mp4.py”, line 218, in _save
File “site-packages\mutagen\mp4\__init__.py”, line 1088, in save
File “site-packages\mutagen\_util.py”, line 140, in wrapper
File “contextlib.py”, line 66, in __exit__
File “site-packages\mutagen_util.py”, line 268, in _openfile
OSError: [Errno 9] Bad file descriptor

I feel like I’m missing something simple. I’ve checked to make sure the files aren’t read-only, but don’t know what else to look for.