diff --git a/src/java/com/threerings/admin/data/AdminMarshaller.java b/src/java/com/threerings/admin/data/AdminMarshaller.java
index b0d97558b..08d1e1ba3 100644
--- a/src/java/com/threerings/admin/data/AdminMarshaller.java
+++ b/src/java/com/threerings/admin/data/AdminMarshaller.java
@@ -47,6 +47,7 @@ public class AdminMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void gotConfigInfo (String[] arg1, int[] arg2)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, GOT_CONFIG_INFO,
                                new Object[] { arg1, arg2 }));
diff --git a/src/java/com/threerings/crowd/chat/data/ChatMarshaller.java b/src/java/com/threerings/crowd/chat/data/ChatMarshaller.java
index a81bad25b..4d11f9233 100644
--- a/src/java/com/threerings/crowd/chat/data/ChatMarshaller.java
+++ b/src/java/com/threerings/crowd/chat/data/ChatMarshaller.java
@@ -49,6 +49,7 @@ public class ChatMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void tellSucceeded (long arg1, String arg2)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, TELL_SUCCEEDED,
                                new Object[] { new Long(arg1), arg2 }));
diff --git a/src/java/com/threerings/crowd/data/LocationMarshaller.java b/src/java/com/threerings/crowd/data/LocationMarshaller.java
index b632a6bea..bd94dd1ca 100644
--- a/src/java/com/threerings/crowd/data/LocationMarshaller.java
+++ b/src/java/com/threerings/crowd/data/LocationMarshaller.java
@@ -48,6 +48,7 @@ public class LocationMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceeded (PlaceConfig arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED,
                                new Object[] { arg1 }));
diff --git a/src/java/com/threerings/micasa/lobby/LobbyMarshaller.java b/src/java/com/threerings/micasa/lobby/LobbyMarshaller.java
index 56eb81ce0..bb86f2652 100644
--- a/src/java/com/threerings/micasa/lobby/LobbyMarshaller.java
+++ b/src/java/com/threerings/micasa/lobby/LobbyMarshaller.java
@@ -48,6 +48,7 @@ public class LobbyMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void gotCategories (String[] arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, GOT_CATEGORIES,
                                new Object[] { arg1 }));
@@ -79,6 +80,7 @@ public class LobbyMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void gotLobbies (List arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, GOT_LOBBIES,
                                new Object[] { arg1 }));
diff --git a/src/java/com/threerings/parlor/data/ParlorMarshaller.java b/src/java/com/threerings/parlor/data/ParlorMarshaller.java
index 8b7b22fa1..73aff4e23 100644
--- a/src/java/com/threerings/parlor/data/ParlorMarshaller.java
+++ b/src/java/com/threerings/parlor/data/ParlorMarshaller.java
@@ -51,6 +51,7 @@ public class ParlorMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void inviteReceived (int arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, INVITE_RECEIVED,
                                new Object[] { new Integer(arg1) }));
@@ -82,6 +83,7 @@ public class ParlorMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void tableCreated (int arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, TABLE_CREATED,
                                new Object[] { new Integer(arg1) }));
diff --git a/src/java/com/threerings/presents/data/TimeBaseMarshaller.java b/src/java/com/threerings/presents/data/TimeBaseMarshaller.java
index 8eba7cd2b..25108092d 100644
--- a/src/java/com/threerings/presents/data/TimeBaseMarshaller.java
+++ b/src/java/com/threerings/presents/data/TimeBaseMarshaller.java
@@ -47,6 +47,7 @@ public class TimeBaseMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void gotTimeOid (int arg1)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, GOT_TIME_OID,
                                new Object[] { new Integer(arg1) }));
diff --git a/src/java/com/threerings/whirled/data/SceneMarshaller.java b/src/java/com/threerings/whirled/data/SceneMarshaller.java
index cac18f32e..f75267010 100644
--- a/src/java/com/threerings/whirled/data/SceneMarshaller.java
+++ b/src/java/com/threerings/whirled/data/SceneMarshaller.java
@@ -50,6 +50,7 @@ public class SceneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceeded (int arg1, PlaceConfig arg2)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED,
                                new Object[] { new Integer(arg1), arg2 }));
@@ -62,6 +63,7 @@ public class SceneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceededWithScene (int arg1, PlaceConfig arg2, SceneModel arg3)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED_WITH_SCENE,
                                new Object[] { new Integer(arg1), arg2, arg3 }));
@@ -74,6 +76,7 @@ public class SceneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceededWithUpdates (int arg1, PlaceConfig arg2, SceneUpdate[] arg3)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED_WITH_UPDATES,
                                new Object[] { new Integer(arg1), arg2, arg3 }));
diff --git a/src/java/com/threerings/whirled/zone/data/ZoneMarshaller.java b/src/java/com/threerings/whirled/zone/data/ZoneMarshaller.java
index aa732d6a9..ecd7bb0d1 100644
--- a/src/java/com/threerings/whirled/zone/data/ZoneMarshaller.java
+++ b/src/java/com/threerings/whirled/zone/data/ZoneMarshaller.java
@@ -51,6 +51,7 @@ public class ZoneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceeded (int arg1, PlaceConfig arg2, ZoneSummary arg3)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED,
                                new Object[] { new Integer(arg1), arg2, arg3 }));
@@ -63,6 +64,7 @@ public class ZoneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceededWithScene (int arg1, PlaceConfig arg2, ZoneSummary arg3, SceneModel arg4)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED_WITH_SCENE,
                                new Object[] { new Integer(arg1), arg2, arg3, arg4 }));
@@ -75,6 +77,7 @@ public class ZoneMarshaller extends InvocationMarshaller
         // documentation inherited from interface
         public void moveSucceededWithUpdates (int arg1, PlaceConfig arg2, ZoneSummary arg3, SceneUpdate[] arg4)
         {
+            _invId = null;
             omgr.postEvent(new InvocationResponseEvent(
                                callerOid, requestId, MOVE_SUCCEEDED_WITH_UPDATES,
                                new Object[] { new Integer(arg1), arg2, arg3, arg4 }));