Lion Server:Cannot enable address book server
Ok. So googling the error messages in the Console app didn't yield results.

However googling the generic 'error reading settings' message the Server app was displaying found this page:

https://discussions.apple.com/thread/3189397?start=0&amp;tstart=0

Basically I had to copy overwrite my httpd.conf file with the original .default version.  Doing this while Server was shutdown and then starting it back up has allowed Address Book, Calendar sever, iChat Sever, and all the rest to start up.