I get a lot of run-time errors, but it isn't that big of a problem. The resources you have in the site are very interesting.
I've already used Twin Spirits, as an intro to Fallen Angels and I'm reading through Ne plus ultra, I might add it in my current campaign which is set on Hamburg.
Finally, the story by Andersen and Johnsen is an interesting read, but not very playable since it reveals so much and usurps the universe as described in their books.