Constant inaccurate font warnings

Hi

I'm regularly getting inaccurate font warnings from InDesign. It's often stopping me to tell me that a font or two is missing, but, well, they're not. They're displaying, printing, distilling properly, they're appearing on the font menu. And I don't see a pattern -- sometimes they're fonts opened from the Adobe Font site, sometimes they're fonts opened in my font managing app (Right Font). It's not devastating, it seems I can continue working and I haven't had any complaints about pdfs I export having any problems with fonts. But it's very annoying and, of course, I worry that something really is wrong somewhere that could lead to problems someday.

Has anyone else been having this problem? 

thanks for any clues!

Kurt