The Archive Manager (file-roller) in LM 22 cannot open any ZIP or 7z files. Version: 43.0+mint1+wilma It shows a password dialog, even though the files are not encrypted.  Engrampa also has issues, not sure if this is the same underlying problem:  The command line unzip program has no issues opening ZIP files. lxqt-archiver, 7z and 7za can extract zip and 7z files as well.