For the last couple of weeks SVN and the latest Beta archives have been inaccessible. I said that I would be keeping an eye on the cvsdude migration and how it affects The Gamebook Engine, but I have not. I just learned of the problem today. Sorry.
I am looking into how to make SVN, and the newer repository where the latest Beta archives are stored, work again.
This does not affect the stable archives, nor the Lone Wolf gamebook. It only affects SVN and Beta archives.