Because of the internal data structure changes, launch configurations created with an
            older version of the IDE won't automatically switch to the Debug perspective when used as a
            debug configuration.
         
         
         
         To fix this problem:
         
         
         
            - 
               Choose  to open the Debug configuration
                  dialog.
               
            
 
            - 
               Change any of the settings for this launch configuration, then click Apply to save the change.
               
            
 
            - 
               Change the setting back to the way you had it before, then click OK to revert your change and close the dialog.