I have a TrueType font that a friend made me a few years back. It's my favorite font and I use it frequently; however, I recently upgraded from CS4 to CS6 and the font doesn't work properly in CS6. It does show in the font menus, but now in CS6 it's sorted in a separate font category (along with the Arabic fonts at the bottom), and the sample in the font menu is now merely squares in place of characters. There is a Regular and Bold verison of the font and both have the same issue.
What changed in CS6, and does anyone know how I can edit the font to make it work with InDesign again? I know I can just pick a new commercial font, but I have such a back log of work that used that font I'd prefer to just fix the font. This is on a Mac, and FontBook validates the font just fine, other apps (including CS4 also work fine with it), I'm not using any font management software (I use FontBook merely for validating the font.)
Any insight would be greatly appreciated.