When I got this error..
before creating a new site, I rename the plugins folder to plugins0, create new site and then rename the plugins0 back to plugins..
That works fine..
I am also having the same issue. “Register this event with Eventbrite.com” is always NO. When I select ‘Yes’ it shows the details entered. Events not registering in eventbrite.
If this is still an issue..
Add this line of code $requestParams .= '¤cy=CAD';
in file.. eventbrite-for-the-events-calendar.class.php
in line 257. This is for Canadian dollars.
currency info
Hope this helps someone…