Hello,
This is a great plugin and have had it working great so far.

In testing, I am able to subscribe to my MailChimp list without issues but once in a while, a subscriber will get the message that says, "A backend database error has occurred. Please try again later or report the issue." The subscription will still go through. Is there any way to get rid of this message?

I've provided a screen shot. I'm running Joomla 3.1.5

Thanks!

Mario