Here is the message:
An error occurred
The following details are provided:
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/
E: The packagelists or status file could not be parsed or opened.
E: _cache->open() failed, please report.
Have had this for about two weeks. Anticipate it is an easy fix, but have not been able to hunt it up via searching, either here or round' the web.