Issues with iOS 4.2 (working on 4.1, 4.3 and 4.2.1)

Question

I have an app that is working fine on my physical device running 4.2.1 iOS.

On the emulator it works fine in 4.1 and 4.3.. however if I try to run the app on the 4.2 emulator, some interface elements (buttons, segmented controllers etc) do not appear, at all.

I have tried changing the build targets to 4.1 and 4.2 to no avail.

I am beyond confused, obviously if I build with a 4.3 target, I can no longer run on my physical device, but if I have it set to 4.2 or 4.1 I can run it on my device running 4.2.1 no problem. Also if I build with 4.1 as the target I can run it on my 4.1 emulator as well with no problem. The problem seems purely on the 4.2 iOS emulator.

Is this a known issue? Is there something I need to worry about? What, if anything, can I do here?

is the 4.2 emulator just screwed up?

Answer 1

Each of the iphone simulator versions keeps its own copies of the app. try deleting the app's directory from ~/Library/Application\ Support/iPhone\ Simulator/4.2 , it is possible that the nib changed, but isn't being copied in for some reason... do a clean before you build.

Answer 2

I am an app developer of 2 years and I can assure you if it works on the other two builds and not 4.2 the emulator is glitching... This happens alot on my apps but they always work on the phone itself. Apple will still approve your app and it will still load on other people's phones no matter what software version they have (for 4.0 +) Don't sweat it;)