Hi all! Something odd is going on with this web site, so I can't read replies, but just in case this goes through...
This video solved my problem: https://www.youtube.com/watch?v=byYkPzdESeI
Apparently you have to install the 32 bit version from the command prompt using the /QUIET switch.
Seems ludicrously convoluted, but there it is, and solved my issue. Hope this helps someone else!