--- old/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	2013-07-11 13:02:55.000000000 +0400
+++ new/src/macosx/classes/sun/lwawt/macosx/CPlatformWindow.java	2013-07-11 13:02:55.000000000 +0400
@@ -900,8 +900,6 @@
             nativePeer = ((CPlatformWindow) platformWindow).getContentView().getAWTView();
         } else if (platformWindow instanceof CViewPlatformEmbeddedFrame){
             nativePeer = ((CViewPlatformEmbeddedFrame) platformWindow).getNSViewPtr();
-        } else {
-            throw new IllegalArgumentException("Unsupported platformWindow implementation");
         }
         return nativePeer;
     }