I realized when I looked at the above thread more closely that you recommended
the above set of files into the relevant location, not installing.
Therefore, please may I inform you that the install I was trying and that had the non-functioning database file has now been renamed on the site as
I have COPIED the files from the previous install directly into a folder named presenters, and it seems to be working just fine.
Thus the only issue seems to be the install, rather than the CMS itself, although I have yet to test all functions.