Dynamic Text not displaying in movie

I have a dynamic text inside a mc symbol but is not showing the content when you type something.

The inputbox is there, you can type and everything, but is not showing the text printed out in the box. If I go to the main timeline works perfectly, but I can place it there, it has to be inside this specific movie clip. What should I do?
:zzz:

Thank you in advance!

It could be a targeting issue, or you might just need to embed the font. If you can post the .fla somewhere, I'm sure someone will gladly take a look at it.