I had a heck of a time getting my slingbox solo working on the iPad. Since it was a pain in the ****, I thought I would post about what worked for me. First, my problem was that the app crashed on startup.
I was already on the latest firmware and it kept saying there were no new updates.
The solution was to reset my Solo to factory defaults and go through the setup again. Once I did that, I removed the app and reinstalled it. It has been working since...
It looks like if local discovery fails on the app, it will never start up correctly again. You *must* remove the app and reinstall.