Tag sources cover-art problem

When going to Tag sources Cover Art if I select Discogs I get
"Failed to authenticate OAuth (1). The message received was unexpected or badly formatted"

see here:

Yes, I get the exact same error as you.
I first experienced it about two weeks ago after I upgraded to the latest version.
I hadn't used MP3TAG for quite a while and when I tried it I saw that Amazon was no longer
a tag source so I installed the latest version and then this error happened. Haven't been
able to use it since. Too bad Amazon is no longer a source it always worked perfectly with it.

If you use MP3tag and Windows XP, then you have to upgrade your system.
See also here: