Thanks Paul, Daniel and Joël,
(I've replied to these bug reports privately already - this reply is
really for you users on the mailing list)
Sun made some changes in the serialization of Enums, in Java 1.6.0_07.
I've diagnosed the problem (with the help of your excellent bug
reports), and produced a fix. This is working, but I still need to
ensure it causes no problems with older JVMs (e.g. Java 1.4, which
didn't have Enums).
It will be released soon.
cheers,
Brendan Macmillan
--
The competent programmer is fully aware of the strictly limited size
of his own skull; therefore he approaches the programming task in full
humility, and among other things he avoids clever tricks like the
plague. - Dijkstra