Appium Error log

appium.log

info: Launching instruments
info: [debug] Attempting to run app on real device with UDID [REDACTED]
info: [debug] Spawning instruments with command: /Applications/Xcode.app/Contents/Developer/usr/bin/instruments -t /Applications/Xcode.app/Contents/Applications/Instruments.app/Contents/PlugIns/AutomationInstrument.xrplugin/Contents/Resources/Automation.tracetemplate -D /tmp/appium-instruments/instrumentscli0.trace -w [REDACTED] com.company.APP -e UIASCRIPT "/Users/tester/Library/Application Support/appium/bootstrap/bootstrap-d2703415b232aad0.js" -e UIARESULTSPATH /tmp/appium-instruments
info: [debug] And extra without-delay env: {}
info: [debug] And launch timeouts (in ms): {"global":90000}
info: [debug] [INST STDERR] 2015-06-30 11:19:21.790 instruments[71172:16656290] WebKit Threading Violation - initial use of WebKit from a secondary thread.
info: [debug] [INST STDERR] 2015-06-30 11:19:23.215 instruments[71172:16656204] Automation Instrument ran into an exception while trying to run the script.  UIAScriptAgentSignaledException
info: [debug] [INST] 2015-06-30 10:19:23 +0000 Fail: An error occurred while trying to run the script.
info: [debug] [INST] Instruments Trace Complete (Duration : 1.376352s; Output : /tmp/appium-instruments/instrumentscli0.trace)
info: [debug] [INSTSERVER] Instruments exited with code 0
info: [debug] Killall instruments
info: [debug] Instruments crashed on startup
info: [debug] Attempting to retry launching instruments, this is retry #2
info: [debug] Killall iOS Simulator