Field builder not working

admin> builders > profile fields : the field do not load...

"loading..."

I have attached image here.

cannot edit profile fields...

any ideas?

Thanks.

That uses jquery/javascript.  So my guess might be something added is keeping it from loading.  What have you added to your site lately?  Some things are loaded site wide, including the admin section.

nothing added...

simple installation with 2 users, trying to setup basic site settings...

no external modules ...

not even SSL...

used firefox, installed firebug,( got info from other messages)

it showed an error : "default language is not set" ===> that was the reason.

I went to Settings >> languages settings >> settings : just click "save" button...

then the "english" became (default).

the problem solve....

hope it helps others if you have the same problem...

didn't expect this kind of problem to happen.