title: Android: Eclipse : Project could not build due to cannot delete v-7appcompat
body: <p>I have created an Android application API 21 using Eclipse luna. I have only API 21 installed on my pc. Initially I faced error of "could not find resource......" for which I found that I got to add support library v7-appcompat. Tried various ways to add the jar, nothing worked. So finally I added the appcompat project to my project. That solved that error.</p>
  
  <p>Then on re-start Eclipse got new 3 errors - Unable to load API 19... (something like this) in appcompat project. In appcompat project int project.properties I changes the target API from 19 to 21. That solved 2 errors.</p>
  
  <p>Now the 3rd error, that I am not able to solve :
   Description    Resource    Path    Location    Type
  The project was not built due to "Could not delete '/android-support-v7-appcompat/bin/classes/android'.". Fix the problem, then try refreshing this project and building it since it may be inconsistent    android-support-v7-appcompat        Unknown Java Problem</p>
  
  <p>I deleted v4-appcompat from my project/libs folder. But yet no results. The /libs &amp; /Android Private Libraries in appcompat both contains v4-appcompat &amp; v7-appcompat. </p>
  
  <p>In my project, I found in /bin/dexedLibs their are 3 jars - android-support-v4-c7810708df94d8bfa4383f5149ab5d83.jar, android-support-v7-appcompat-892bfc35ccacd9325da1c2c80a3f3acb.jar, android-support-v7-appcompat-c13bc4563c36037596e53cd84b2614f2.jar</p>
  
  <p>Can you let me know what is the problem and how should I solve it.
  Any help is highly appreciated. I am in hurry to start working on the project.</p>
  
  <p>Thanks</p>