[Christiaan]

Okay, I deleted all iDisk items from Keychain (including the company one) I signed my machine out of company MobileMe account, locked all Keychains. Logged out and restarted a couple of times. No luck.

Logged into a different account and it worked, so I came back to my account and deleted the preferences file and support files for OmniFocus, including Caches, and tried again. But still no luck. :( Clicking on Sync just takes me to the greyed out prefs.