Hello. I just upgraded ISPC to 3.1.13 and the usual update + full-upgrade for the underlying Debian 9. Since some of the sites I host still require php5 and the distro only supplies 7.x, I installed php5.6 from packages.sury.org . Too bad now I can only use Mod-PHP mode, because trying to activate PHP-FPM results in a .vhost.err file and if I try to use that as vhost apcache2ctl reports the error in subj. I already tried to delete the link from sites-enabled and tools->resync but nothing changed. I also tried deleting the vhost file (to be sure the only content is what ISPC puts there). Same result. After solving this I'll have to dig how to switch PHP version on vhost-by-vhost basis... But since it's a production server I can't experiment too much Tks for any hints.