A few days ago, I was very excited to learn that Apple accepted my first app on to the app store. After months of development, testing, and generous help from these message boards, it was very satisfying to finally have it out in the world.
However.... I am now receiving reports that my app crashes upon launch when run on an iPhone5. I want to get this fixed ASAP
to avoid the dreaded 1-star reviews from angry iPhone5 users. (Thankfully, I know the user who reported the crash to me.)
At this point, though, I am unsure of how to test for and fix this crash. I do not own an iPhone5 (just a 3GS) and the iOS6 emulator does not seem to want to launch when I attempt to run it from LC 5.5.3 with XCode 4.5. I know that my app *does* run properly on physical devices running iOS 6 - including the iPhone 3GS and 4, and the iPad 2.
I've seen some posts on iPhone5 troubles, but I'm wondering what, specifically, others are doing to test and solve their problems. Submitting new standalones with LC 5.5.3? Changing their build settings? Breaking down and buying iPhone5's?
Again, I'm a little flummoxed here and would like to stay ahead of the negative reviewers!

Thank you all in advance for any advice,
--John
P.S. My app was created using LC 5.5.1/XCode 4.5, set for 5.1 & Higher, Universal for iPhone, iPad, and iPod Touch.