Tags Showing Up as Bad

Been using the same workflow for years.

Download DJ music from a company called Promo Only.

Edit tags in Mp3tag. Save tags and add to library.

Last week, the files started showing up as bad tags. I have reached out to the source company and they report no issues.

I have rolled back the versions on both download program and editor, as well as using different Windows OS. I downloaded another tag editor to see if those were read as bad as well, but they looked good.

Any ideas?

image

Please carry out the steps asked for in this thread:

esp. the part that deals with the integrity check.
If the files come out flawless after the check with the suggested programs, we have to see what to do next.