I tried to install this theme on other server.
But there is no problem. So I guess this problem is affected any server settings, or database setting?
Sorry I am a beginner.
Please tell me any possibility,
Hi as you said I already updated to latest 2.5.4 version.
But not change to solved this problem.
In usual,
if I choose “progress bar” in Content Elements, it will appears like below message.
https://dl.dropboxusercontent.com/u/18766693/2014-02-25%2016-21-33.jpg
And also I cant “save” edit page if included “progress bar” with 403 error.
Please help me asap.