Embedded fonts stopped working

Hey,
I am trying to embed a couple of fonts into a movie. I have created the symbols in the library and set their linkage values.

In my code, I have them defined as follows:
var businessNameFont:Font = new BusinessName()
… etc

it was all working fine until a couple minutes ago (when i just restarted), now i get the following error:
1180: call to possibly undefined method BusinessName.

I have confirmed that nothing has changed but it still doesn’t want to work. is there something that i am missing?