AS2: Am I XML Blind? Text disappearing

I have a card like movieclip that contains a textfield that calls in the XML fine. But then when I motion tween and tilt the movieclip the text in the text field disappears for no reason - when I change the field to just static text and enter some jargon it works fine - so why does dynamic text disappear when ever I tilt the moveclip it sits in.

The effect I am making it like a deck of cards being dealt out so they slide across the screen at different angles.