Problem appears when opening and attempting to use the "Templates Manager: Edit Style" page for the ionsphere template. I have also tried the gantry template with the same results.
Firebug, upon loading page shows:
a.get("click") is null Gantry line 9.
The Text boxes are editable but all the sliders, buttons and other controls are unresponsive.
I have this same setup on 2 sites that both have similar setups and the same issue.
Solved the issue on my own. I had installed the "OSToolbar" (
www.ostraining.com/ostoolbar/
) on the sites. It puts an icon on the top right (by the Close and Help buttons). Something with that plugin on the Template: Edit Style page didn't work well together.