title: User Operation is waiting for "Building Workspace"
body: <p>As the title mentioned, I have developed a simple NFC app in eclipse and I am trying to run it in the mobile device to debug my code. However, when I try to run it, this message came out, the problem even cannot launch. It said one operation left, but it seems like it has stopped. Have anyone met the similar problem before, or anyone know what is happening here?</p>
  <p><img src="https://i.stack.imgur.com/0vOSJ.jpg" alt="The screen comes out when I run the program" /></p>