[MacBerry]

You didn't describe actually downloading the latest version through the App store, only re-syncing the copy you already have in iTunes. Updates aren't compulsory, so re-syncing wont automatically get you the newest version.

Either:

In iTunes, click applications in the sidebar, then check for updates.

Or:

In the app store on the iPhone, click the updates tab.

Both should find the new version, but if they don't, use search to find OF as if you were going to buy it, then click buy. As long as you are using the same account as you did when you bought it originally, you won't be charged.

Mark