iOS bug_type 179 crash on startUp

[CODENAME1]

I am running the same build on two 4S(with iOS 8.4)

One one the app runs successfully but on the other the App crashes on startup.... will the below log be of any help?

{"os_version":"iPhone OS 8.4 (12H143)","bug_type":"179"}
{
  "log_timestamp" : "2015-08-13T09:59:17+0200",
  "sessions_data" : [
{
  "app_events" : [
    {
      "type" : "app_session",
      "duration" : 12,
      "state" : "foregroundRunning",
      "date" : "2015-08-03T14:36:11+0200"
    }
  ],
  "app_build_version" : "1.7",
  "app_version" : "1.7",
  "app_bundleid" : "com.mycompany.myapp.unexus",
  "app_cohort" : "",
  "app_storefront" : 0,
  "app_sessionreporter_key" : "9E061A83-4F03-42F4-A5B6-C3EF3E82BB79",
  "app_adamid" : 0,
  "app_is_beta" : false
}
  ],
  "scheduled" : false,
  "region_format" : "US",
  "os_version" : "iPhone OS 8.4 (12H143)",
  "log_version" : 2,
  "language" : "en",
  "machine_config" : "iPhone4,1"
}

When connecting iphone to iTunes, i get the following log generated

[1592 @ Thu Aug 13 12:35:20 2015] [(unknown facility) iTunesHelper.exe] _AMDDevicePaired (thread 144): Device Paired: 'AMDevice 000000E347F95700 {UDID = ac7716d30ce0973b6897612961b6fff5e70d81a3, device ID = 9, location ID = 0x0, product ID = 0x12a0}'.

[6384 @ Thu Aug 13 12:36:02 2015] [YSLog APSDaemon.exe] defaults key ShouldLog in domain APSDaemon.exe is (null)

[1436 @ Thu Aug 13 12:36:51 2015] [_ISDVLog SyncServer.exe] Logging initialized, engine version (null) : log level 3

[1436 @ Thu Aug 13 12:36:53 2015] [(unknown facility) com.apple.Safari.isRegistered] dataClassNamesInstalledForClientWithIdentifier: app not installed

[1436 @ Thu Aug 13 12:36:53 2015] [(unknown facility) com.apple.Safari.isRegistered] dataClassNamesInstalledForClientWithIdentifier: app not installed

[Shai Almog]

I don't see anything specifically wrong here.