title: The container 'Android Dependencies' references non existing library
body: <p>Please excuse my bad English, I'm french :)</p>
  
  <p>So, I have got a problem with my android project...
  I've got this error The container 'Android Dependencies' references non existing library[...]</p>
  
  <p>I've made a lot of search on Google and :
  - The library is an android library (the case is checked)
  - The library is "called" in my project (Android tab then Add)
  - I build on Java 1.6</p>
  
  <p>And I still have this error (and for all included projects !)</p>
  
  <p>Could you help me ? </p>
  
  <p>Thanks a lot</p>