Photoshop CS5 GIF issue

Hey everyone... I have a question. I made an animated GIF recently with CS5 that worked WONDERFULLY. But since then I havent been able to at all!! With CS5 image ready is built in (ugh) and you have to import video into CS5.... It generally gives you s preview of your AVI... but instead of ANYTHING it gives me nothing but white frames!! UGh....



HALP!?  Thanks everyone. :)