Bug 97451 [IDE] [WorkingSets]'Build Working Set' menu item not working
I'm developing an eclipse-based editor, which is composed of 4 plugins. I created a working set made up to these 4 plugins inorder to be able to build and run these plugins in one shot. BUT, the 'Build Working Set' compile option does nothing when i select it. My working set does appear in the list, but when i select it, the build process does not start at all. I recently migrated to 3.1M7. All was fine in 3.0.1. I just imported all the 4 old plugin projects into 3.1M7 and created a new working set definition in 3.1M7.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/actions/BuildSetAction.java
public static BuildSetAction lastBuilt;
    private IWorkingSet workingSet;
    private IWorkbenchWindow window;
    private IActionBarConfigurer actionBars;
    /**
     * Creates a new action that builds the provided working set when run
     */
    public BuildSetAction(IWorkingSet set, IWorkbenchWindow window,
            IActionBarConfigurer actionBars) {
        super(set == null ? "" : set.getName(), AS_RADIO_BUTTON); 
        this.window = window;
        this.actionBars = actionBars;
        this.workingSet = set;
    }
    /**
     * Returns the working set that this instance is building
     */
    public IWorkingSet getWorkingSet() {
        return workingSet;
    }
    public void run() {
        lastBuilt = this;