IF when Saving Theme Options you see this error:

There was a problem with your action. Please try again or reload the page.

Please check the following:

• 1. If this happens with a clean theme and demo theme options.

This can happen due to a permission/security setting that is in place. Check-in with your hosting provider and ask them to check the servers ModSecurity rules for admin-ajax and ensure it has permissions to write.

• 2. If this happens after adding a custom css, remove the extra css as it may be wrong and cannot be saved.