Animstreet has been running for quite some time now. It was a wonderful experience for us. We unfortunately do not have enough time to maintain it (as you may already have noticed). It particular, over the years, Flash became deprecated, and our Unity plugin is almost certainly not working on your browser anymore too. So we decided to close Animstreet by the end of January.
If you are looking for a good and free Mocap resource, you can go to: https://sites.google.com/a/cgspeed.com/cgspeed/motion-capture
If you have any question, please send us an email at firstname.lastname@example.org
It was a great journey. Thanks everyone for all your help, participation and enthusiasm.
We wish you all the best and happy animating.