Cef_100_percent.pak

My updating avast stops when cef_100_pecent.pak comes up. This has happened three times in a row. I cannot even uninstall avast without getting an error

  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP…?)
  • Other security related software installed…?
  • Which AV(s) did you use before Avast…?