I tried google. Nothing. My skin viewer on planet minecraft used to work, but for the past while now it won't work, it just has a white screen and "error click for details". It also says "ClassNotFoundException" and all I can see is the flat skin print on the right. I'm using the latest FireFox, the latest Java, and the latest FlashPlayer (Adobe).

Sorry if this is an easy problem i'm being a derp with, but i'll help with any extra questions about what's happening to the extent of what I know. Please be specific if you give me instructions on how to fix, or what to do.