I have the exact same problem. Does anyone know if it is possible to do something to make it work on the IPad or do we just have to write off the money for the app or buy a Pro HD ?
* Edited to observe Slingbox Answers Forum House Rules by Moderator. *
It's a disgrace that SlingBox do not allow for the SlingBox Pro to work with the iPad and when they say you can 'Upgrade' your SlingBox it basically means - go and buy a new SlingBox - a complete joke!
When I downloaded the app for my iPad I complained to Apple and they gave me my money back - its hardly a cheap app, especially when you've already shelled out for the SlingBox.
The only way to get SlingBox on your iPad is to download the iPhone version and then load it onto your iPad. It's not great, but you can scale it up, so at least you get most of the screen. If your watching via the HDMI connection to another TV, it's actually not too bad. I don't really want an HD SlingBox because my home broadband is so slow, I doubt I'll be able to watch anything.
SlingBox - sort it out! Or give a major major discount on a replacement 'upgrade' please.