Probably done something stupid, but if so, I don't know what!!
Get this message when told to go to Synaptic, and check packages, but this as far as I can get.
Tried sudo apt-get update, but get similar type message.
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/packages.linuxmint.com_dists_nadia_import_i18n_Translation-en
E: The package lists or status file could not be parsed or opened.
E: _cache->open() failed, please report.