ZeroC Ice reference to class

Question

I have the following two classes:

class RedirectInfo{


    ["java:getset"]string originalRetUrl;

    ["java:getset"]string proposalRetUrl;

    ["java:getset"]string comment;
};

and

class ResultTO extends ::http::ResponseTO {

    ["java:getset"]common::StringList pagingLinks;

    ["java:getset"]RedirectInfo ri;
};

When RedirectInfo is not null, I get the following exception:

Exception is "ice.UnmarshalOutOfBoundsException"