If you trying to build from unity3d and are using xcode 3.4.1 then you will be probually getting the changed splash screen error!
If you are getting this error then you will need to downgrade to xcode 4.3 then try a complete new build again.
Mine worked after installing the xcode 4.3.1 build from itunes connect and then downgrading it to 4.3 from itunes connect.
The build from the app store might not be able to downgrade it.
Any questions please make a comment.
Gogo Tunnel Runner is our new game for the iPhone, iPod & iPad.
It’s a fast, fun, frantic racing / dodging game that will have you wanting to play ‘Just one more time’ to beat your personal best and your friends around the world via Game Center.It’s quick and simple to play and extremely addictive and you’ll be trying your best to go just that bit faster and longer.
You can find more information here

Get it now at the appstore


You can even have a go here GoGoTunnelRunner
Enjoy