[Paint.Net (null) error]

Thanks so much for the help, it worked.            

Also I don't know how to remove this post, if you could, please remove it for me, and again thank you.

[Paint.Net (null) error]

first off, I have been using Paint.Net for a long time with no problems at all, I use it just about everyday to do projects, but to day after using paint it gave the option to download a update, and after that, It would not open paint and it kept saying this.
 
 
 
I've also tried repairing it and uninstall/install it several times, then when that did not work I googled the problem and found nothing, so i came here. Can I please get some help with this problem.