SerializationException when using serializable object in Dispatch Action

[Clay Harris]

Hello,

I've tried this a couple of different times now, in wholly different contexts, and I keep running up against the same problem.  Actions/Results appear to work fine with DispatchAsync.execute(Action, AsyncCallback), but if I add a custom serializable object to the Action, I receive the following stack trace (on top of the execute call):

com.google.gwt.user.client.rpc.SerializationException
 at com.google.gwt.user.client.rpc.impl.SerializerBase.getTypeHandler(SerializerBase.java:153)
 at com.google.gwt.user.client.rpc.impl.SerializerBase.serialize(SerializerBase.java:125)
 at com.google.gwt.user.client.rpc.impl.ClientSerializationStreamWriter.serialize(ClientSerializationStreamWriter.java:183)
 at com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject(AbstractSerializationStreamWriter.java:126)
 at com.gwtplatform.dispatch.shared.DispatchService_Proxy.execute(DispatchService_Proxy.java:33)
 at com.gwtplatform.dispatch.client.RpcDispatchAsync.doExecute(RpcDispatchAsync.java:55)
 at com.gwtplatform.dispatch.client.AbstractDispatchAsync.execute(AbstractDispatchAsync.java:93)

The object is custom, implements Serializable and IsSerializable, and contains nothing but a String and another object that is also Serializable/IsSerializable, containing only integers.

I hope I'm just missing something obvious.  Has anyone else run into this?

Thanks

[Julien Dramaix]

Are you sure that your serialization policy file is well deployed ?

[Clay Harris]

I was having the problem in hosted mode, so I assume so.  After looking at it afresh this morning, I realized my issue was actually Serialization - lack of a default no-arg constructor.  I got it working, thankfully.  

I'm not sure what the problem was last time, as I know I had the constructors, but its been months so I don't have it available to check.

Thanks

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