mURLin Error

[Cornel]

Hello. Im trying to figure out my mURLin plugin problem. Runnin Cacti 0.8.8b.
mURLin 0.2.4
I installed the plugin. I can see it in the menus, and now Im trying to add a new website to monitor. (http response).
Whenever I try to add a new URL, the moment I try to save i get this:
CSRF check failed. Your form session may have expired, or you may not have cookies enabled.

when I try to save a new URL

mURLin-Error01.JPG (16.19 KiB) Viewed 2680 times

Then when I try to do a test for a URL (any URL), I get a website error stating that the website is under maintenance. (see attached screenshot)

Testing a new URL

mURLin-Error02.JPG (25.07 KiB) Viewed 2680 times

I login directly into the Ubuntu OS and I do a wget website, its successful.
In the Cacti logs, I grep for mURLin get this:

05/06/2016 10:19:25 AM – CMDPHP: Poller[0] Host[121] DS[3447] CMD: /usr/bin/php -q /usr/share/cacti/site/plugins/mURLin/scripts/query_sites.php 121 get availability 1, output: U
05/06/2016 10:20:00 AM – CMDPHP: Poller[0] mURLin – INFO: Reached Poller Bottom, clearing cache
05/06/2016 10:24:24 AM – CMDPHP: Poller[0] mURLin – INFO: Cache Miss
05/06/2016 10:24:24 AM – CMDPHP: Poller[0] Host[121] DS[3447] CMD: /usr/bin/php -q /usr/share/cacti/site/plugins/mURLin/scripts/query_sites.php 121 get availability 1, output: U
05/06/2016 10:25:00 AM – CMDPHP: Poller[0] mURLin – INFO: Reached Poller Bottom, clearing cache
05/06/2016 10:25:48 AM – CMDPHP: Poller[0] mURLin – INFO: Cache Miss
05/06/2016 10:25:48 AM – CMDPHP: Poller[0] Host[121] DS[3447] CMD: /usr/bin/php -q /usr/share/cacti/site/plugins/mURLin/scripts/query_sites.php 121 get availability 1, output: U

I really want to get this mURLin working, I really need it. What is wrong with my setup and how can I fix it?
Thanks…