title: Eclipse working set is missing
body: <p>My Eclipse crashed, and a working set which I'd just spent an hour setting up is now missing.</p>
  
  <p>But when I try and create a new working set with the same name, it says "A working set with that name already exists."</p>
  
  <p>So if it exists, where is it?  I can't find it in my workspace...
  If it doesn't exist, why can't I create a new one of the same name?</p>
  
  <p>I've tried refreshing my workspace (F5), and running ./eclipse -clean - no joy.</p>