mlantz & czgarrett: You probably need to force OmniFocus to refresh your cache.
- Quit OmniFocus
- Open Finder
- In the menubar, select Go>Go to Folder...
- Enter "~/Library/" in the folder field
- In the Caches folder, move the folder "com.omnigroup.OmniFocus" to the Trash
- Relaunch OmniFocus
(If that doesn't fix it, please email our ninjas:
omnifocus@omnigroup.com)