I get the following error in my console:
Applications are expected to have a root view controller at the end of application launch
I was able to set the initial view controller on the summary screen of xcode.
Click on the top most project name in the left hand file explorer (it should have a little blueprint icon). In the center column click on your project name under 'TARGETS', (it should have a little pencil 'A' icon next to it). Look under 'iPhone / iPod Deployment Info' and look for 'Main Interface'. You should be able to select an option from the drop down.