after seeing Campsite featured on opensourcecms.com I rejoiced, believing that this software finally has been restructured so that a wide public can use it.
What a pity that this isn't the case! And what a deception of people who expect, especially from a CMS featured that publicly, to be able to install it on their hosting accounts!
You ought to say it clearly that Campsite won't work unless one has at least a VPS. As those come along at prices of minimally 40-50 US$ per month Campsite is not nearly as egalitarian and earthroot as it claims to be. Few people short of fullblown ads-sustained publishers have the means to fork over such a sum each month, especially when the published content is of the system and politics-critical sort.
Just for the information, most modern, security-intent hosts run PHP as CGI, have phpsuexec active, refuse command-line interaction from users and scripts are commonly owned by the user himself, not by apache. Users commonly are neither allowed to install additional PHP modules or change server configurations.
I've an ample, fast and well-supported hosting package on a firstclass host. So far I was able to install nearly every script I wanted and never had a problem, except - and that's the "nearly" - Campsite.