If I choose to compile to anything else then iPhone4 I always get black borders at the top and bottom.
Am I missing something?
You need to add the Launch Images to your project.
They can be found in the Example projects folder or create new ones using an app that comes with Xojo(don’t remember its name…) 
ESPECIALLY important for iPhone6/6+ otherwise they emulate a resolution less that optimum…
Thats what I initially did.
But it seems I had to reset the iOS Emulator because it now seems to work.
[quote=153788:@Christoph De Vocht]Thats what I initially did.
But it seems I had to reset the iOS Emulator because it now seems to work.[/quote]
The simulator is kind of temperamental. Quitting usually teaches it how to behave.