- Reinstalled the plugin. (Long story, MMW issues.)
- Asked to reauthorize this time.
- Did that, but may not have waited long enough.
- Plugin would do an initial search, but changing anything went to the OAuth error.
- Tried to Reauthorize, problems accessing the site; error with the API address.)
- Plugin the numbers in the options; no good.
- Restart, no; Reboot, no; restart, no;
- Disable Proxy, no.
- Post a complaint about MMW, come back, and it works.
Some weird routing glitch between me and Discogs?
Just unlucky?
Too impatient? (It was about 30 minutes between start of issue, and magic resolution.)