I just edited the tab control you made on the test page and it works fine. I wonder if the cause was that I was trying to add it to an already existing page, which was created using dummy content?

I am using Win 7 pro, actually a new install one week old.

Hi Ismael, I’ve definitely deactivated plugins. This issue is happening on a testing site I’ve created on a subdomain http://test.persuadedbase.com , which only has Enfold installed with its “dummy content”. But I can also confirm that the issue happens on the main domain as well http://persuadedbase.com, which only has a basic install of the Enfold theme, also without any plugins installed. (both are new installs)

The issue happens in the tab control, and to replicate it, I add a tab control, then click on one of the tab names to edit, and immediately it’s name will change to “undefined”. Happens in both Chromium 31 (with no extensions) and Firefox 25 with add-ons disabled.

Should I PM you a logon?