[Plugin: W3 Total Cache] Pop up "Suport Us" not quiting

Hi,

I’m using W3 Total Cache two month over 30 sites. Now when I’m going to the W3 Options Page it appears an popup to Support de Plugin. I tried to do the things that it says but the popup doesn’t disappear. It’s a bug?

I need to change some configuration and with this popup the configuration doesn’t saves.

The popup: https://imageshack.us/photo/my-images/856/capturadepantalla201207.png/