I know ForwardDiff no longer exports the derivative functions, so someone will have to go in and change those kinds of things.
I don't know how @PerezHz would feel about it, maybe you should write him first?
Okay, I'll email him.
Thanks for the heads up on this
if you won't be able to reach him you can try to write @lbenet, he will know what the status of the package is
I think he is his advisor, but I'm not so sure about it now:-)
Hi everyone! @ChrisRackauckas thanks for contacting us, glad to know you're interested in what we've been working on! :smile: Yes, we did take it down, we're re-organizing it (it's pretty much mixed with some celestial mechanics stuff) and planning to re-upload the generic parts of the code