I can't save changes of settings of an Omega subtheme. Problem just happens in remote server I can't save changes of settings of an Omega subtheme in admin/appearance/settings/omega_subtheme_2 

I get no error message. The changes are not saved at all.

This problem just happens in remote server. In my local server works just fine.

I guess it could be a folder or file permission problem. I already set the permission of site/all/themes/omega subtheme 2 folder and all its content to 777. But the problem persist.
this thread may answer your question: http://drupal.org/node/1388196 

for some it is a suPHP request.max_vars and  post.max_vars issue