diff --git a/src/as/com/threerings/io/ObjectOutputStream.as b/src/as/com/threerings/io/ObjectOutputStream.as
index 736819349..e1949b683 100644
--- a/src/as/com/threerings/io/ObjectOutputStream.as
+++ b/src/as/com/threerings/io/ObjectOutputStream.as
@@ -29,7 +29,7 @@ public class ObjectOutputStream
         var cmap :ClassMapping = _classMap[cname];
 
         // create a class mapping if we've not got one
-        if (cmap === undefined) {
+        if (cmap == null) {
             var streamer :Streamer = Streamer.getStreamer(obj);
             // streamer may be null to indicate a Streamable object
             if (streamer === undefined) {
diff --git a/src/as/com/threerings/io/Streamer.as b/src/as/com/threerings/io/Streamer.as
index 8924d0f14..8c3415630 100644
--- a/src/as/com/threerings/io/Streamer.as
+++ b/src/as/com/threerings/io/Streamer.as
@@ -42,7 +42,7 @@ public class Streamer
             createStreamers();
         }
 
-        for (var ii :int = 0; ii < _streamers.lenght; ii++) {
+        for (var ii :int = 0; ii < _streamers.length; ii++) {
             if (_streamers[ii].isStreamerFor(obj)) {
                 return _streamers[ii];
             }
diff --git a/src/as/com/threerings/presents/client/Client.as b/src/as/com/threerings/presents/client/Client.as
index 9c4512b11..feccb3bd3 100644
--- a/src/as/com/threerings/presents/client/Client.as
+++ b/src/as/com/threerings/presents/client/Client.as
@@ -292,7 +292,7 @@ public class Client extends EventDispatcher
     protected var _bstrap :BootstrapData;
 
     /** Manages invocation services. */
-    protected var _invdir :InvocationDirector;
+    protected var _invdir :InvocationDirector = new InvocationDirector();
 
     /** Ticks. */
     protected var _tickInterval :Timer;