phenotrophe:~/Development/Mono/objc-sharp/src/objc-sharp plasma$ svn diff Bridge.cs 
Index: Bridge.cs
===================================================================
--- Bridge.cs   (revision 60775)
+++ Bridge.cs   (working copy)
@@ -919,9 +919,7 @@
                                                il_generator.Emit (OpCodes.Ldind_I);
                                                il_generator.Emit (OpCodes.Call, typeof (Bridge).GetMethod ("NativeToManaged", BindingFlags.Static | BindingFlags.NonPublic));
                                        } else {
-                                               if (returntype != typeof (void))
-                                                       il_generator.Emit (OpCodes.Box, returntype);
-                                               else
+                                               if (returntype == typeof (void))
                                                        il_generator.Emit (OpCodes.Pop);
                                        }
                                        il_generator.Emit (OpCodes.Ret);


phenotrophe:~/Development/Mono/objc-sharp/test plasma$ cp ../src/objc-sharp/objc-sharp.dll . ; ./marshalling  ; echo $?
0