diff --git a/invesalius/data/viewer_volume.py b/invesalius/data/viewer_volume.py
index 4fba86b..0fec3e8 100755
--- a/invesalius/data/viewer_volume.py
+++ b/invesalius/data/viewer_volume.py
@@ -189,6 +189,9 @@ class Viewer(wx.Panel):
         
         Publisher.subscribe(self.RemoveVolume, 'Remove Volume')
 
+        Publisher.subscribe(self._check_ball_reference, 'Enable style')
+        Publisher.subscribe(self._uncheck_ball_reference, 'Disable style')
+
     def SetStereoMode(self, pubsub_evt):
         mode = pubsub_evt.data
         ren_win = self.interactor.GetRenderWindow()
@@ -255,6 +258,20 @@ class Viewer(wx.Panel):
         self._mode_cross = False
         self.RemoveBallReference()
 
+    def _check_ball_reference(self, pubsub_evt):
+        st = pubsub_evt.data
+        if st == const.SLICE_STATE_CROSS:
+            self._mode_cross = True
+            self._check_and_set_ball_visibility()
+            self.interactor.Render()
+
+    def _uncheck_ball_reference(self, pubsub_evt):
+        st = pubsub_evt.data
+        if st == const.SLICE_STATE_CROSS:
+            self._mode_cross = False
+            self.RemoveBallReference()
+            self.interactor.Render()
+
     def OnShowSurface(self, pubsub_evt):
         index, value = pubsub_evt.data
         if value:
@@ -262,7 +279,6 @@ class Viewer(wx.Panel):
         else:
             self._to_show_ball -= 1
         self._check_and_set_ball_visibility()
-        print "OnShowSurface: to show ball", self._to_show_ball
 
     def SetBallReferencePosition(self, pubsub_evt):
         x, y, z = pubsub_evt.data
@@ -358,7 +374,6 @@ class Viewer(wx.Panel):
             self.interactor.Render()
             self._to_show_ball -= 1
             self._check_and_set_ball_visibility()
-            print "RemoveVolume: to show ball", self._to_show_ball
 
     def RemoveActors(self, pubsub_evt):
         "Remove a list of actors"
@@ -408,8 +423,6 @@ class Viewer(wx.Panel):
         pass
 
     def SetInteractorStyle(self, state):
-        print "SetInteractorStyle"
-        print "state: ", state
         action = {
               const.STATE_PAN:
                     {
@@ -646,7 +659,6 @@ class Viewer(wx.Panel):
             self.raycasting_volume = True
             self._to_show_ball += 1
             self._check_and_set_ball_visibility()
-            print "OnShowRaycasting: to show ball", self._to_show_ball
             if self.on_wl:
                 self.text.Show()
 
@@ -655,7 +667,6 @@ class Viewer(wx.Panel):
         self.text.Hide()
         self._to_show_ball -= 1
         self._check_and_set_ball_visibility()
-        print "OnHideRaycasting: to show ball", self._to_show_ball
 
     def OnSize(self, evt):
         self.UpdateRender()
@@ -686,7 +697,6 @@ class Viewer(wx.Panel):
         self.interactor.Render()
         self._to_show_ball += 1
         self._check_and_set_ball_visibility()
-        print "LoadActor: to show ball", self._to_show_ball
 
     def RemoveActor(self, pubsub_evt):
         utils.debug("RemoveActor")
@@ -696,7 +706,6 @@ class Viewer(wx.Panel):
         self.interactor.Render()
         self._to_show_ball -= 1
         self._check_and_set_ball_visibility()
-        print "to show ball", self._to_show_ball
         
     def RemoveAllActor(self, pubsub_evt):
         utils.debug("RemoveAllActor")
@@ -710,7 +719,6 @@ class Viewer(wx.Panel):
     def LoadVolume(self, pubsub_evt):
         self.raycasting_volume = True
         #self._to_show_ball += 1
-        #print "to show ball", self._to_show_ball
 
         volume = pubsub_evt.data[0]
         colour = pubsub_evt.data[1]
@@ -734,6 +742,7 @@ class Viewer(wx.Panel):
             self.ren.ResetCamera()
             self.ren.ResetCameraClippingRange()
 
+        self._check_and_set_ball_visibility()
         self.UpdateRender()
 
     def UnloadVolume(self, pubsub_evt):
@@ -743,7 +752,6 @@ class Viewer(wx.Panel):
         self.raycasting_volume = False
         self._to_show_ball -= 1
         self._check_and_set_ball_visibility()
-        print "UnloadVolume: to show ball", self._to_show_ball
 
     def OnSetViewAngle(self, evt_pubsub):
         view = evt_pubsub.data
@@ -819,7 +827,6 @@ class Viewer(wx.Panel):
         self.interactor.Render()
 
     def OnInsertLinearMeasurePoint(self, obj, evt):
-        print "Hey, you inserted measure point"
         x,y = self.interactor.GetEventPosition()
         self.measure_picker.Pick(x, y, 0, self.ren)
         x, y, z = self.measure_picker.GetPickPosition()
@@ -842,7 +849,6 @@ class Viewer(wx.Panel):
             self.interactor.Render()
 
     def OnInsertAngularMeasurePoint(self, obj, evt):
-        print "Hey, you inserted a angular point"
         x,y = self.interactor.GetEventPosition()
         self.measure_picker.Pick(x, y, 0, self.ren)
         x, y, z = self.measure_picker.GetPickPosition()
--
libgit2 0.21.2