--- /org/python/core/PyReflectedConstructor.java	Tue Dec  5 23:58:32 2006
+++ PyReflectedConstructor.java	Tue Jan 16 14:00:42 2007
@@ -127,6 +127,8 @@
 
                 PyJavaClass jc = PyJavaClass.lookup(javaClass); // xxx
                 jc.initConstructors();
+                if(jc.__init__ == null)
+                    throw Py.TypeError("can't instantiate " + javaClass + " - no __init__");
                 return jc.__init__.__call__(iself, args, keywords);
             }
         }