Few days back I had everything working with a provisioning profile for Distribution( App Store).And after upgrading iphone to IOS7 the ipa not installing in any of ios7 but is working fine with ios6.
While using iTunes it says waiting... or installing... for long but when used iphone configuration Uitility it says invalid profile(Doubt is how is it working on IOS6)????
It is also working with Distribution Certificate of type ADHOC where i added the device udid in the device List.So Architecture is definitely not the problem