I don't think my problem is a Zenphoto one but I'll ask here anyway.

I have installed WAMP64 and placed the zenphoto folders in the relevant folder. When I browse to the site the zenphoto setup routine runs as expected but even before I enter any db credentials that section of the setup page reports:
MySQLi reported: MySQLi not connected

My searching on this error has not yet found anything that helps me. Is there anyone here that can point me in the direction of a fix?

Thanks.