title: Classes can not be resolved when debugging
body: <p>I am debugging a java web application running on JBoss 6 using Eclipse. I am not remote debugging. When I try to inspect the value of any variable (Strings etc.), I get the message "The type javax.el.ELResolver cannot be resolved. It is indirectly referenced from required .class files".</p>
  
  <p>The strange thing is, the problem only happens when inspecting variables. The application itself does not seem to miss any classes.</p>
  
  <p>How can I make inspecting variable values work again?</p>