Whenever I click the debug button on any project I get the window "Errors Running Operations". The error is: "Launching (Error: Failed Launching CDI Debugger)" click in it gives me these details:

Failed Launching CDI Debugger
org.eclipse.cdt.debug.core.cdi.CDIException: Error initializing: No symbol "invalid" in current context.
org.eclipse.cdt.debug.mi.core.GDBServerDebugger.createLaunchSession(Unknown Source)
org.eclipse.cdt.launch.internal.LocalCLaunchConfigurationDelegate.launch(Unknown Source)
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:569)
org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:788)
org.eclipse.debug.internal.ui.DebugUIPlugin$6.run(DebugUIPlugin.java:955)
org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)
  Error initializing: No symbol "invalid" in current context.
org.eclipse.cdt.debug.core.cdi.CDIException: Error initializing: No symbol "invalid" in current context.
org.eclipse.cdt.debug.mi.core.GDBServerDebugger.createLaunchSession(Unknown Source)
org.eclipse.cdt.launch.internal.LocalCLaunchConfigurationDelegate.launch(Unknown Source)
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:569)
org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:788)
org.eclipse.debug.internal.ui.DebugUIPlugin$6.run(DebugUIPlugin.java:955)
org.eclipse.core.internal.jobs.Worker.run(Worker.java:66)

I'm running gentoo linux and Exlipse 3.0.1