BauSystem_Main/src/de/steamwar/bausystem/world/AutoLoader.java

@@ -158,7 +158,7 @@ public class AutoLoader extends IAutoLoader implements Listener {
     public void onPlayerInteract(PlayerInteractEvent event){
         if (event.getAction() != Action.RIGHT_CLICK_BLOCK && event.getAction() != Action.PHYSICAL)
             return;
-        if (event.getClickedBlock().getBlockData().getMaterial() == Material.OBSERVER)
+        if (event.getClickedBlock().getType() == Material.OBSERVER)
             return;
         if (event.getPlayer().isSneaking())
             return;