I have setup my office calendar using CalDev to my office computer and almost everything works as expected.
I have "On My Mac" calendars and "CalDev" calendars on both my workstations (OSX 10.6.8) and on my server (OSX 10.8.2) user accounts. When I invite someone from a "On My Mac" calendar an email is sent to the invitee, as desired. When I invite someone from a "CalDev" calendar, no email is sent to the invitee.
Is this how Apple intended iCal invitations to work, or is it a bug? It would seem to me that in an office using shared "CalDev" calendars, invitations should be able to be sent to other employees via email. Any comments would be appreciated.