- 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?
Too impatient? (It was about 30 minutes between start of issue, and magic resolution.)