[dnaunton]

I was the good people at OmniFocus Support who suggested the Security Update as a possible issue!

David-
It's looking more and more like this is a problem caused by the latest security update Apple released.

The relevant thread from our forums:
<http://forums.omnigroup.com/showthread.php?t=5777>

which links to this thread on Apple's discussion boards on page three:
<http://discussions.apple.com/thread.jspa?messageID=6143620�>

the suggested fix would then be to do the following:
do a "Get Info" on the 'com.omnigroup.OmniFocus' folder. Add a 'system' permission, which is set to "Read & Write". Apply the privileges to any sub-folders, as well.

Does that help? If not, or if you have any other questions/suggestions, let me know and I'll be happy to help.

Sincerely,
Brian C.
Support & QA Manager