Unable to create user during installation

Good day,

I have been trying to get Invoiceplane installed on a hosted web server that runs cPanel. So far I have not been able to get it to create a user during installation (I have read through the other similar topics but none of the supposed work around methods have worked for me).

The setup runs correctly up to the setup/create_user step. No matter what I enter into the optional boxes (leaving them empty, using none or even adding valid text) when I click continue it just takes me back to the setup/create_user step.

I have tried both using index.php/setup (no .htaccess rewrite) and without index.php. I have tried both using a sub-domain (accounts.ominent.co.za) as well as a sub-folder (ominent.co.za/accounts).

Below is the web log for the sub-domain when I tried again today installing the application;

196.210.98.185 - - [12/Apr/2016:10:19:25 +0200] "GET /index.php/ HTTP/1.1" 500 1642 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:19:34 +0200] "GET /index.php/setup HTTP/1.1" 302 - "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:19:35 +0200] "GET /index.php/setup/language HTTP/1.1" 200 5110 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:05 +0200] "POST /index.php/setup/language HTTP/1.1" 302 - "http://accounts.ominent.co.za/index.php/setup/language" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:05 +0200] "GET /index.php/setup/prerequisites HTTP/1.1" 200 3533 "http://accounts.ominent.co.za/index.php/setup/language" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:07 +0200] "POST /index.php/setup/prerequisites HTTP/1.1" 302 - "http://accounts.ominent.co.za/index.php/setup/prerequisites" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:07 +0200] "GET /index.php/setup/configure_database HTTP/1.1" 200 3602 "http://accounts.ominent.co.za/index.php/setup/prerequisites" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:24 +0200] "POST /index.php/setup/configure_database HTTP/1.1" 200 2092 "http://accounts.ominent.co.za/index.php/setup/configure_database" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:25 +0200] "POST /index.php/setup/configure_database HTTP/1.1" 302 - "http://accounts.ominent.co.za/index.php/setup/configure_database" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:26 +0200] "GET /index.php/setup/install_tables HTTP/1.1" 200 2151 "http://accounts.ominent.co.za/index.php/setup/configure_database" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:28 +0200] "POST /index.php/setup/install_tables HTTP/1.1" 302 - "http://accounts.ominent.co.za/index.php/setup/install_tables" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:28 +0200] "GET /index.php/setup/upgrade_tables HTTP/1.1" 200 2150 "http://accounts.ominent.co.za/index.php/setup/install_tables" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:30 +0200] "POST /index.php/setup/upgrade_tables HTTP/1.1" 302 - "http://accounts.ominent.co.za/index.php/setup/upgrade_tables" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:20:30 +0200] "GET /index.php/setup/create_user HTTP/1.1" 200 44106 "http://accounts.ominent.co.za/index.php/setup/upgrade_tables" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:22:57 +0200] "POST /index.php/setup/create_user HTTP/1.1" 403 44106 "http://accounts.ominent.co.za/index.php/setup/create_user" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:23:26 +0200] "POST /index.php/setup/create_user HTTP/1.1" 403 44111 "http://accounts.ominent.co.za/index.php/setup/create_user" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:24:18 +0200] "POST /index.php/setup/create_user HTTP/1.1" 403 45487 "http://accounts.ominent.co.za/index.php/setup/create_user" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"
196.210.98.185 - - [12/Apr/2016:10:28:21 +0200] "POST /index.php/setup/create_user HTTP/1.1" 403 45487 "http://accounts.ominent.co.za/index.php/setup/create_user" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0"

Any help/advice will be appreciated.

Regards