title: Android USB debug not listing in "Device choser" mac os android studio 1.4.1
body: <p>I had a Android studio 1.4(mac os) and was working on my USB device connected. It was working fine for many days. But i downloaded a project which was done in Android 1.5 preview version and imported a project. Gradle asked me to sync to latest version of grade and i did sync. After that i am not able see my USB devices in device list. USB debugging is still on in devices, i rebooted Android studio, mac and tried. Still same result. I toggled USB device mode, tools -> Android -> Enable ADB. I am exhausted.  I am not sure if this issue is anything related to grade sync, but problem is issue started for me after the sync.</p>
  
  <p>Pls help</p>
  
  <p>EDIT:
  sudo ./adb kill-server
  sudo ./adb start-server
  sudo ./adb devices</p>
  
  <p>even, this did not work. devices list only emulator not USB connected device</p>