I'll give up.
Uneasy.
I have been using zencart for about 10 years with no problem (and installed it many times onto different websites and different web hosts). The only thing is is that it is no more translated into french and I don't want to do it; but it is very interesting with many possibilities, and up to date.
However I wanted to work with more recent cms.
I tried several ecommerce softwares: woocommerce, prestahop: they were very easy to install (like zencart) but after 2 days I'll give up with clicshopping.
Sorry but it is the fact. Neither local, neither on a web server you can make it work correctly.