This is the information I get when I try
sudo apt-get update or when I try to use the Package Manager.
Reading package lists... Error! W: GPG error: http://us.archive.ubuntu.com trusty Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <firstname.lastname@example.org> E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_trusty_main_i18n_Translation-en E: The package lists or status file could not be parsed or opened.
I tried following one of the answers I found here by doing:
sudo add-apt-repository --remove ppa:versable/elementary-update sudo apt-get clean sudo apt-get update
but it did not help me. Any help is appreciated!