It's linked from our OpenType Q&A doc, as well.
If you aren't seeing the standard teal-and-black "O" icons for the fonts, it might be worth checking. But otherwise, I'd suspect this is an Acrobat issue. If your icons try the Acrobat forum as my first stop.
I must admit, I don't recall hearing this particular problem before, so I am at a bit of a loss. There are a couple of other "cleaning" kinds of steps recommended in the OpenType readme, that one could try.
Regards,
T