This is regarding a pesky error message for the Drupal 7 version (there's no D7 option here so I just chose 6.x-1.0-beta2, but it's really D7) that's installed on one of my sites (http://vector.dj), which can be downloaded from RocketTheme (http://www.rockettheme.com/drupal-downloads/free/2682-grunge):

Notice: Undefined index: attributes in main_menu_item_link() (line 774 of /home/vector/public_html/sites/all/themes/contrib/grunge/template.php).

After finding a solution for the same exact problem on a different module from the same developer on Google (http://www.rockettheme.com/forum/index.php?f=15&t=164748&rb_v=viewtopic), I commented out line 774. But then I get the following error messages (and so just uncommented line 774 back to original for now):

Notice: Undefined variable: subtext in main_menu_item_link() (line 778 of /home/vector/public_html/sites/all/themes/contrib/grunge/template.php).
Notice: Undefined variable: subtext in main_menu_item_link() (line 782 of /home/vector/public_html/sites/all/themes/contrib/grunge/template.php).

The error messages seem to appear randomly across the entire site. Anyone know of a solution? I don't have an account at RocketTheme (and therefore can't ask anything there) so I thought this place would be the best alternative. Any help is greatly appreciated.