I made the changes, but the schema update page is still solid white.
I checked the apache logs, and now, all i get is:
administrator@FOG:~$ sudo tail /var/log/apache2/error.log
[sudo] password for administrator:
[Thu Jul 30 16:32:57.197238 2015] [core:error] [pid 24249] [client 10.20.23.135:60588] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.197260 2015] [core:error] [pid 24249] [client 10.20.23.135:60588] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.985251 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.985315 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.997296 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.997316 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.998069 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:57.998085 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:58.006411 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
[Thu Jul 30 16:32:58.006424 2015] [core:error] [pid 24250] [client 10.20.22.136:58385] AH00082: an unknown filter was not added: PHP
administrator@FOG:~$