According to Ejecta documentation:
To change the desired screen orientation of your App (portrait or landscape), go to the Resources/Info.plist file and select the appropriate orientation for the Initial interface orientation from the drop down menu.
Do not check any of the Supported Interface Orientations buttons in the project settings; leave them all unselected. There's a bug in iOS6 that prevents this from working correctly.
Also in Info.plist be sure to change the Bundle identifier setting to something that represents you or your company.