Selenium Webdriver: Not able to run scripts in iPhone 5, using appium 1.3.4 & ios-webkit-debug-proxy

Hi,
I am not able to run java scripts in iPhone.
Configurations:
OS X Version 10.10
Appium 1.3.4
Device: iPhone 5
Steps:
I launched appium through terminal.
Cmd: Appium &
Then launched ios-webkit-debug-proxy.
Cmd: ./bin/ios-webkit-debug-proxy-launcher.js -c [device udid]:27753 -d

But i keep getting this error in terminal

error: Log capture did not start in a reasonable amount of time
info: [debug] Cleaning up appium session

error: Failed to start an Appium session, err was: Error: Log capture did not start in a reasonable amount of time

info: [debug] Error: Log capture did not start in a reasonable amount of time
at null._onTimeout (/usr/local/lib/node_modules/appium/lib/devices/ios/ios-log.js:137:10)
at Timer.listOnTimeout (timers.js:110:15)
info: [debug] Responding to client with error: {“status”:33,“value”:{“message”:“A new session could not be created. (Original error: Log capture did not start in a reasonable amount of time)”,“origValue”:“Log capture did not start in a reasonable amount of time”},“sessionId”:null}

Please suggest any solution.

Thanks in advance.