Libra 7.1 does not work at all with Omega 3.1

It doesn't look like this theme has been actively maintained. It does not work with 7.x-3.0 or 7.x-3.1. This version seems to only work with Omega 7.x-1.1, which is outdated. If anyone has had success with setting up Libra with Omega, please let me know. I've tried other solutions that people posted with no success. After making the following suggested modification to the template.php file, the system is still broken. Only a part of the page shows up:

// $hooks = omega_theme($existing, $type, $theme, $path);
$hooks['omega_theme'] = array($existing, $type, $theme, $path);

I get the following errors with Libra:

Notice: Undefined variable: branding_wrapper_width in include() (line 10 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: header_logo_width in include() (line 11 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: secondary_nav in include() (line 29 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: primary_nav in include() (line 37 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: secondary_nav in include() (line 37 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: default_container_width in include() (line 93 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: default_container_width in include() (line 94 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: content_container_width in include() (line 100 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: main_content_classes in include() (line 101 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: sidebar_first_classes in include() (line 123 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: sidebar_second_classes in include() (line 129 of /sites/all/themes/libra/page.tpl.php).
Notice: Undefined variable: footer_container_width in include() (line 175 of /sites/all/themes/libra/page.tpl.php).

It would be great if a patch could be made so it could work with Omega 7.x-3.1.