I just loaded the last 3 of them via iTunes without difficulty. Did you see the iPad get synced when you added the files?
Also, it appears that if you have OmniGraffle for iPad running when you add a stencil file or document via iTunes, the new material won't show up until you restart the app. That's my hunch as to what happened...
Also, it appears that if you have OmniGraffle for iPad running when you add a stencil file or document via iTunes, the new material won't show up until you restart the app. That's my hunch as to what happened...