Cannot reproduce reliably. Stack trace:

Token: 1303140884546 Received deltas with no stacklet present! Unknown.$fillInStackTrace (StackTraceCreator.java:147) Unknown.fillInStackTrace (StackTraceCreator.java:387) Unknown.IllegalStateException_1 (Throwable.java:46) Unknown.$onUpdate_1 (OperationChannelMultiplexerImpl.java:504) Unknown.$onUpdate_2 (ViewChannelImpl.java:329) Unknown.onWaveletUpdate_0 (RemoteWaveViewService.java:307) Unknown.$onWaveletUpdate (RemoteViewServiceMultiplexer.java:101) Unknown.$onMessage_1 (WaveWebSocketClient.java:184) Unknown.onMessage (GWTSocketIOConnectionImpl.java:120) Unknown.anonymous (GWTSocketIOConnectionImpl.java:17) Unknown.entry0 (Impl.java:214) Unknown.anonymous (Impl.java:57)

Tad, can you please take a look at this issue? It seems to be connected with sockets.io

The OperationChannelMultiplexer expects to receive a snapshot before any deltas for any particular wavelet. It looks like it's receiving a delta without the preceding snapshot message. The problem could exist somewhere below the mux but also maybe at the server.