Bug reported by a customer on FusionDrupalThemes.com where the theme's non-responsive grid layout options were not being displayed after responsive layouts was disabled.
The attached patch corrects a bug in the theme_settings.php code for Fusion core. There was a slight syntax error in the creation of the non-responsive grid settings form item.
':input[name="responsive_enabled"]' => array('value' => 0)
was changed to:
':input[name=responsive_enabled]' => array('value' => '0')