[Andrew]

Sandy, your directions seem to indicate that you have a locally-synced iDisk. If that is the case, then your step 3 and step 4 worry me, because OmniFocus syncs over WebDAV to the MobileMe server, and _independently_ Apple's iDisk has its own syncing that knows nothing about the structure of the OmniFocus database file and could very easily corrupt or completely delete it. Even if you have OmniFocus on the Mac syncing via Disk mode to your locally-synced iDisk, that will conflict with changes from the iPhone / iPod touch due to the same problem.

The safer way to do this is to mount your iDisk manually in the Finder and delete it there, rather than on the locally-synced iDisk. (Maybe that's what you did, but it wasn't clear from your instructions.)

The general rule of thumb is to mess with your OmniFocus database in one location only. So if you have OmniFocus on _one_ Macintosh, it should be safe to use Disk mode to sync to the local copy of the iDisk and to manually delete the OmniFocus database on the local iDisk when you want to reset it. (Although we've had customers with locally-synced iDisks report unexplained corruption that was resolved for them when they turned off iDisk syncing.) However, if you add a second Mac or an iPhone or iPod touch to the mix, that is no longer safe, and you need to switch to only touching the OmniFocus database via WebDAV. (Which is what we recommend in the common case anyway.)