E: Some index files failed to download. They have been ignored, or old ones used instead.
Warning:  apt-get update failed for some reason
PPA to be removed: 
ppa.launchpad.net/samrog131/dump/ubuntu/dists/trusty/main/binary-amd64/Packages 
ppa
Warning:  Could not find package list for PPA: 
ppa.launchpad.net/samrog131/dump/ubuntu/dists/trusty/main/binary-amd64/Packages 
ppa