Embedded fonts not working

embedded fonts aren’t working for me in TextFlow. The non-embedded/pre-included fonts are working fine but if i try to add my own font, it doesn’t work.

i have the font set to DF4 and i have it exported for ActionScript with a class name.
the font i’m using specificaly is Kozuka Gothic Pro L, which is OpenType.

i’m using actionscript to assign that font to a textfield.

any ideas on what could be wrong here?

if you need me to provide any more data pls tell me so.