I think I may have a similar problem but I accidentally removed the main entry (not the install 'site.com:80/') site.com and as soon as I did that my site returns "Unknown Host" for every page. Deleting db.php restores my main page, but when I try to re-activeate wp-hive the same happens.
I think the above instructions might help, but I am not savvy enough to know how to do them all.
What I was trying to do was...
My subdirectory install was not working (site.com/posts/) and I had to keep deleteing the db.php to get access then re-activating wp-hive to make the links to the subdomain entries work (sub1.site.com). I had both site.com/ and site.com:80/ install in the table so I thought that removing the first would fix it (duh its wp_ for a reason, bad idea).
I think I need to add the wp_ value back to the table. But not sure how to do that correctly.
Thanks for any help.
- Bryon