I’m getting ready for Rhino 8 and want to start building our plug-ins for v8. But I can’t seem to download the C++ SDK: both these links do not work, show a spinnerball for a long time, then " Sorry, we can’t find that page "
https://www.rhino3d.com/download/rhino-sdk/8/beta/
https://www.rhino3d.com/download/rhino-sdk/8/wip/