UnexpectedReplyCodeException can not be serialized because its private member
of
type org.globus.ftp.vanilla.Reply is not serializable.

As a subclass of java.lang.Exception the class
org.globus.ftp.exception.UnexpectedReplyCodeException is implementing the
java.io.Serializable interface and is expected to be serialized successfully if
desired. In fermilab destributed application gsiftp client and the initiator of
the transfer are located on two different nodes and are communicating via tcp
sockets. If error occures it is reported by serializing the serializable
throwable sources of errors. If class UnexpectedReplyCodeException is not
expected to be seialized then it should be derived from Throwable directly and
not from Exception.