I'm having problems with the Ubuntu Software Center, when I try to open it, after two seconds it closes. I've tried reinstalling it but I keep getting this when I try sudo apt-get update:
W: Failed to fetch http://ppa.launchpad.net/software-store-developers/ppa/ubuntu/dists/raring/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/software-store-developers/ppa/ubuntu/dists/raring/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.
Thanks!