title: I can't debug using breakpoints
body: <p>I'm getting a strange error message in SpringSource Tool Suite (eclipse) when I try to place breakpoints and debug my project, so in this case, when I start Tomcat for debug it shows me the following error message:
  "Unable to install breakpoint in bus.GenBUS$$EnhancerByCGLIB$$749137d3 due to missing line number attributes. Modify compiler options to generate line number attributes.
  Reason : Absent Line Number Information" </p>
  
  <p>But I have already controlled and everything is fine in <strong>Preferences -> Java -> Compiler</strong> section (<strong>add line number attr...</strong> is checked). My project is Spring MVC project... Any suggestions ?</p>