Discovery - Blank page

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Hi,

I'm a Cacti newbie and up until now things have been going well - thanks for all the effort you guys have put into this. However I'm having some trouble configuring the discovery template v1.5-1 on Cacti version 0.8.8a. When I click on Templates/Discovery Templates the url <myhost>/cacti/plugins/discovery/discover_template.php presents a blank page.

I get the following errors in my apache error.log :

Code: Select all

[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include(./include/auth.php): failed to open stream: No such file or directory in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 27, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include(): Failed opening './include/auth.php' for inclusion (include_path='.') in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 27, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include_once(./lib/utility.php): failed to open stream: No such file or directory in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 28, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include_once(): Failed opening './lib/utility.php' for inclusion (include_path='.') in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 28, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include_once(./include/top_header.php): failed to open stream: No such file or directory in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 54, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Warning:  include_once(): Failed opening './include/top_header.php' for inclusion (include_path='.') in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 54, referer: http://<SERVER>/cacti/
[Fri Jan 31 14:31:55 2014] [error] [client <CLIENT>] PHP Fatal error:  Call to undefined function load_current_session_value() in /usr/local/share/cacti/plugins/discovery/discover_template.php on line 287, referer: http://<SERVER>/cacti/

I'm running Apache 2.2.22 and PHP 5.3.10.

Has anybody seen this before? I've tried a Google and forum search to no avail..