Does phpinfo confirm your settings? Sometimes server configuration tools have an impact on php settings and may override the settings in phpini. I had a similar problem, memory limit didn't change unless I took care of the certain config tool.
Confixx: Search for the SWsoft Confixx support forum. There are many threads how to solve such PHP problems. I have Confixx running, too, and at the moment no problems...
Thx for your help, I think I found something!
There seems to be a setting in the confixx_vhost.conf where you can handle such settings with open_basedir! Have to test it later! Will post my experiences for these users with such or similarly problem.
So i fixed this in my confixx_vhost.conf!
The setup wizzard is complete!
Normally, now i have to see my plain_site! But I get an 403 Error, no access, after installation!??