Unable to launch the appium inspector for iOS

HI,

Was unable to launch the appium inspector.Could you please help me on this.

Xcode 6.1
Appium 1.3.1
Platform 8.1

I gave the correct path
platform version as 8.1
In Developer settings, i enabled it and custom server flags as --platform-version 8.1

Error message saying that “Could not get list of sessions from Appium Server”