title: Android SDK has not been setup in the preferences
body: <p>I have adt-bundle-linux-x86 package and working for a month, its works fine till yesterday. But Today eclipse shows me the ADT update screen as following:<img src="https://i.stack.imgur.com/jkVwN.png" alt="enter image description here"></p>
  
  <p>while checking update i get "<strong>No updates were found</strong>"</p>
  
  <p>But i could not create a new project,use the existing project and even could not open the AVD.
  The AVD Manager throws "<strong>Location of the Android SDK has not been setup in the preferences</strong>."</p>
  
  <p>The Window->Preference->Android window does not load any Android SDKs (few days before it was present). But still there is present the <strong>Android-8,Android-14,Android-16 and 17</strong> folders in the following path "<strong>/home/murali/adt-bundle-linux-x86/sdk</strong>".</p>
  
  <p>I have spend several hours to solve the problem but i couldn't get solution and find out the reason why the problem occur. i have struggled with my works, please help me. </p>
  
  <p>This is my Preference window(herewith i attached for better understanding)
  <img src="https://i.stack.imgur.com/FJ12i.png" alt="Preference window with error"></p>
  
  <p>please help me to solve the SDK and ADT problems.</p>