title: Not able to debug with Flex Builder 3
body: <p>I use Flex for a short time, use a bit pushed to my client for a solution-oriented monitoring. </p>
  
  <p>Background: </p>
  
  <p>Platform: </p>
  
  <ul>
  <li><p>Windows XP</p></li>
  <li><p>Eclipse 3.4 Ganymede</p></li>
  <li>Flex Builder 3.0.2 Licenced</li>
  <li>JDK 1.6_20</li>
  <li>Firefox 3.6</li>
  <li>Flash Player 9 (Debug version)</li>
  <li>Server: OSGI (Eclipse equinox) an
  instance of jetty service allows HTTP
  requests</li>
  </ul>
  
  <p><strong>Requirements</strong>: 
  Make debugger in ActionScript by putting "BreakPoint" to assess the contents of variables. </p>
  
  <p><strong>Problem</strong>: 
  The code does not stop at breakpoint, worse, if a breakpoint is enabled, the module flex does not start. </p>
  
  <p><strong>Actions</strong>: 
  Reinstall all the dev environment (Eclipse, Flex Builder, Flash Player): KO 
  Removing repo maven modules and complete rebuilds: KO 
  Restarting Windows: °) KO </p>
  
  <p>Logs: 
  this is what the log contains just after launching the platform (modules) in debug mode. </p>
  
  <pre><code>java.lang.NullPointerException 
  Has com.adobe.flexbuilder.debug.breakpoints.FlexLineBreakpoint.findSourceFiles (FlexLineBreakpoint.java: 388) 
  Has com.adobe.flexbuilder.debug.breakpoints.FlexLineBreakpoint.instantiate (FlexLineBreakpoint.java: 442) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget.breakpointAdded (FlexDebugTarget.java: 981) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget $ FdbThread.installDeferredBreakpoints (FlexDebugTarget.java: 631) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget $ FdbThread.advanceStateMachine (FlexDebugTarget.java: 662) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget FdbThread.access $ $ 6 (FlexDebugTarget.java: 636) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget $ 1.run (FlexDebugTarget.java: 738) 
  Has org.eclipse.core.runtime.SafeRunner.run (SafeRunner.java: 37) 
  Has org.eclipse.core.runtime.Platform.run (Platform.java: 880) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget $ FdbThread.eventLoop (FlexDebugTarget.java: 718) 
  Has com.adobe.flexbuilder.debug.model.FlexDebugTarget $ FdbThread.run (FlexDebugTarget.java: 779) 
  at java.lang.Thread.run (Thread.java: 619) 
  </code></pre>