[Steven Zahm]

@ Steven

My guess is that the database is out of date on both the dev and live server. It is the only scenario where I see this error occur. This only seems to happen when the plugin has been updated using a method which does not trigger it internal update routine. For example pushing the latest version of the plugins files from a dev to live without first making sure to update the database.

The only way to fix this would be to manually force the upgrade routine on both your dev and live instance. I can do this. It only takes me a couple minutes. I’ll need the WP admin logins for both sites. They can be posted here as a private reply.