title: GWT module [name] may need to be (re)compiled error
body: <p>Installed latest Eclipse (Luna) and added latest GWT plugin (no Maven), any GWT project that I try to run in Eclipse gives the same error </p>
  
  <p>GWT module [name] may need to be (re)compiled.</p>
  
  <p>Tried the projects that worked in older versions of eclipse before, same error.</p>
  
  <p>Tried deleting ALL generated files/cache files and clearing browser cache, as per old Stackoverflow recommendations. </p>
  
  <p>Tried different versions of JDK.</p>
  
  <p>Tried reinstalling everything from scratch, creating new workspace and new empty project using web-app Eclipse wizard,  the same result.</p>
  
  <p>No errors in logs.</p>
  
  <p>Any ideas would be appreciated. Thanks.</p>