SO the client I got from here, updated recently, and ever since I cant even open the client, before I even get to the log on screen says Sorry wont open and says to close.

I no techy and I cant fix this problem, as the file it says is missing is no where to be found, here is a look at the problem I getting.

http://img156.imageshack.us/img156/1511/minecraftprob.jpg

Would like is someone can solve this for me, and yes before you go saying I didn't I did have a look for a topic like this, so if I missed it please tell me.

Cheers Walnut