[whpalmer4]

Then I would try dragging that URL that worked from Safari into the note field in OmniFocus and see if it works any better.

Case doesn't matter for Perspective, but it does matter for the perspective name. Also make sure you don't have a spurious space at the end of the URL, that you've got three '/'s and not two, and of course that you spelled the perspective name correctly...

If that still doesn't work, I would make a test perspective, and a new action, and see if you can get that working. You might also try selecting another action, doing Edit->Copy As Link, and pasting into the notes field of your test action. If clicking on that link doesn't work, then it sounds like there's something pretty fundamental broken.