Dear Mike,
Thanks for pointing out the obsolete Curves link; I have made corrections in both 3DNA v1.5 and v2.0 websites to link to the new Curves+ program.
I am only hoping other 3DNA users could follow your lead to report any typos, bugs, broken links and make constructive suggestions. Working together, we can make 3DNA a better tool to serve the community.
Best regards,
Xiang-Jun