[Brian]

Folks sometimes think that the OmniFocus-to-OmniFocus sync also syncs with iCal - but that's not the case; you want to select File -> Synchronize with iCal to send the data over.

The other thing that folks don't always realize is that actions in OmniFocus are synced to the ToDo database, not the calendar database. (See extensive discussion of this in other posts on the forums.) In iCal, if you select View -> Show ToDo List... do your actions appear?

If not, then you'll definitely want to contact the support ninjas. OmniFocus and iCal both talk to a part of Mac OS X (called Sync Services) that can be somewhat tempermental. The ninjas can help you get it un-stuck.

Apologies if you've tried all this already - I couldn't really tell what you had or had not tried before posting.