I got the same thing. Console spit this back out:
> Uncaught ReferenceError: MultiPostThumbnails is not defined
>> onclick
Refreshed and tried a few more times, still nothing.
Nothing has changed on my site, and if it did it was not because anyone did anything. My site is still hidden from public use, so it can’t be the number of calls. I’ve resorted to inserting them right into the MySQL database. I think the geolocation process needs more QA attention.
@cybersprocket,
I did try disabling API v2. It worked for a few days but then stopped suddenly with the same error as before.
Fixed the problem. Apparently, I had another JJ Nextgen plugin activated that was causing it to conflict.