Hmm, nothing wrong here.
Another attempt to guess the reason: for i in `locate conf/php.ini` ; do grep -q php-fpm-pool-settings $i && echo $i ; done
Run in putty.
Also, try this:
1. set up required verbosity:
/usr/local/psa/admin/conf/panel.ini:
[log]
filter.priority = 7
show.util_exec = on...