也许有人可以帮助我. 
  
 
当appium尝试运行应用程序时,屏幕会闪烁应用程序启动画面,就像appium尝试多次启动应用程序一样.这种行为在模拟器和真实设备上都会发生.
我在我的iOS设备UI Autimation上设置启用,但是当我尝试启动检查器时,我遇到了这个问题:
info: [debug] [INST STDERR] 2015-11-05 15:11:05.082 instruments[1495:39489] WebKit Threading Violation - initial use of WebKit from a secondary thread.
info: [debug] [INST STDERR] 2015-11-05 15:11:06.049 instruments[1495:39460] Attempting to change event horizon while disengage
error: Failed to start an Appium session,err was: Error: Instruments crashed on startup
info: [debug] [INST STDERR] 2015-11-05 15:11:06.049 instruments[1495:39462] Attempting to change event horizon while disengage
Instruments Trace Error : Target Failed to run: Permission to debug com.myapp.iphone was denied. The app must be signed with a development identity (e.g. iOS Developer).
info: [IOS_SYSLOG_ROW ] Nov  5 15:11:04 tests-iPod com.apple.xpc.launchd[1] (UIKitApplication:com.myapp.iphone[0xe163][607]) <Notice>: Service exited due to signal: Killed: 9
info: [debug] [INSTSERVER] Instruments exited with code 253
info: [debug] Killall instruments
info: [debug] Instruments crashed on startup
info: [debug] We exceeded the number of retries allowed for instruments to successfully start; failing launch
info: [debug] Stopping iOS log capture
info: [debug] Reset not set,not ending sim or cleaning up app state
info: [debug] Cleaning up appium session
info: [debug] Error: Instruments crashed on startup
    at [object Object].Instruments.onInstrumentsExit (/Applications/Appium.app/Contents/Resources/node_modules/appium/submodules/appium-instruments/lib/instruments.js:440:31)
    at [object Object].<anonymous> (/Applications/Appium.app/Contents/Resources/node_modules/appium/submodules/appium-instruments/lib/instruments.js:353:12)
    at ChildProcess.emit (events.js:110:17)
    at Process.ChildProcess._handle.onexit (child_process.js:1074:12)
info: [debug] Responding to client with error: {"status":33,"value":{"message":"A new session Could not be created. (Original error: Instruments crashed on startup)","origValue":"Instruments crashed on startup"},"sessionId":null
info: <-- POST /wd/hub/session 500 33841.937 ms - 182} 
 申请表格为.ipa
谢谢,
最好的祝福.
解决方法
Target Failed to run: Permission to debug com.myapp.iphone was denied. The app must be signed with a development identity (e.g. iOS Developer).
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