Trouble-shooting menu routing

Hi all,

I could use some trouble-shooting advice for a corrupted/partially restored (That's a long story) Drupal database. My site now loads with a generic error that I'm struggling to debug.

I think I've trace the problem to menu routing, but now I'm stuck. The menu_get_item function returns $router_items[$path] false. That doesn't seem right, but I'm not sure. I'm also not sure how to trouble-shoot it.

I'd be grateful for any suggestions, like is there a better forum to post this request?