Try a different way of assessing the plainness of an object that doesn't rely on describeType(). This could potentially break games and such in somewhat non-obvious ways. I've tested a number of things locally but the next step is www.dev.whirled.com.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5044 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/Util.as

@@ -22,8 +22,7 @@
 package com.threerings.util {
 
 import flash.utils.ByteArray;
-
+import flash.utils.getQualifiedClassName;
-import flash.utils.describeType; // function import
 
 public class Util
 {
@@ -65,7 +64,7 @@ public class Util
      */
     public static function isPlainObject (obj :Object) :Boolean
     {
-        return (obj != null) && ("Object" == describeType(obj).@name.toString());
+        return getQualifiedClassName(obj) == "Object";
     }
 
     /**