Autodesk recently took down the 3D annotation addin from the Labs website. I can't seem to find it anywhere. Does anyone have this downloaded that you can upload so that I can download it?
Maybe if you slip a little something into their labcoat pocket?
I understand your frustration, been in the same boat a few times.
It would be great if they didn't remove those features until they were rolled out into the new release.
There have been some very good add-ins that I got used to using only to have some of them vanish and not be in the newer release.
You should really be in the Feedback portal...all I can say.