import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.preference.IPreferenceStore;
-import org.eclipse.linuxtools.tmf.Tracer;
+import org.eclipse.linuxtools.tmf.core.Tracer;
import org.eclipse.linuxtools.tmf.ui.TmfUiPlugin;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
import org.eclipse.ui.IViewReference;