Dear All,
I’m beginner in using Appium.
I try to configure Appium and to run my test (only capabilities).
I have always problems like 
info: [debug] Error: Could not initialize ideviceinstaller; make sure it is installed and works on your system
at [object Object].IOS.getIDeviceObj (/Applications/Appium.app/Contents/Resources/node_modules/appium/lib/devices/ios/ios.js:909:13)
at [object Object].IOS.installToRealDevice (/Applications/Appium.app/Contents/Resources/node_modules/appium/lib/devices/ios/ios.js:856:32)
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:607:21
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:246:17
at iterate (/Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:146:13)
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:157:25
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:248:21
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/async/lib/async.js:612:34
at [object Object]. (/Applications/Appium.app/Contents/Resources/node_modules/appium/lib/devices/ios/ios.js:1527:14)
at /Applications/Appium.app/Contents/Resources/node_modules/appium/node_modules/underscore/underscore.js:890:21
at [object Object]._onTimeout (/Applications/Appium.app/Contents/Resources/node_modules/appium/lib/devices/ios/ios-log.js:166:7)
at Timer.listOnTimeout (timers.js:119:15)
info: [debug] Responding to client with error: {“status”:33,“value”:{“message”:“A new session could not be created. (Original error: Could not initialize ideviceinstaller; make sure it is installed and works on your system)”,“origValue”:“Could not initialize ideviceinstaller; make sure it is installed and works on your system”},“sessionId”:null}
info: <-- POST /wd/hub/session 500 16312.085 ms - 300
error: Log capture did not start in a reasonable amount of time
error: Could not initialize ideviceinstaller; make sure it is installed and works on your system
error: Failed to start an Appium session, err was: Error: Could not initialize ideviceinstaller; make sure it is installed and works on your system
Could you please help me to resolve this problem.
Thank you very much!
Best regards,