"MobileSafari quit unexpectedly" error during simulator execution in MacBook Air


I am executing java script in iPad Retina simulator using appium app in MacBook Air.
Xcode version: 7.0
Appium app version: 1.4.13

Driver initialization:
DesiredCapabilities capabilitiesIOS = new DesiredCapabilities();
capabilitiesIOS.setCapability(“platformName”, “iOS”);
capabilitiesIOS.setCapability(“platformVersion”, “9.0”);
capabilitiesIOS.setCapability(“safariAllowPopups”, false);
capabilitiesIOS.setCapability(“safariIgnoreFraudWarning”, true);
capabilitiesIOS.setCapability(“deviceName”, “iPad Retina”);
capabilitiesIOS.setCapability(“browserName”, “Safari”);
driver = new RemoteWebDriver(new URL(“”),

During execution, sometimes simulator closes with a error saying “MobileSafari quit unexpectedly”.
Solution for this will be very helpful.

Thanks in advance.