Cannot retrieve value of undefined directive

Warning: Cannot retrieve value of undefined directive Output.FlashCompat on line 3826 in file /home/svampita/incontrinuovi-org-test/plugins/htmlpurifier/HTMLPurifier.standalone.php in /home/svampita/incontrinuovi-org-test/plugins/htmlpurifier/HTMLPurifier.standalone.php on line 1855

Warning: Cannot retrieve value of undefined directive Output.FlashCompat on line 3826 in file /home/svampita/incontrinuovi-org-test/plugins/htmlpurifier/HTMLPurifier.standalone.php in /home/svampita/incontrinuovi-org-test/plugins/htmlpurifier/HTMLPurifier.standalone.php on line 1855

Why I don't have this error when I login with Admin user (Dolphin Admin) ? When I'm in with Admin account everything goes fine.

Please, help me!

Your site performs fine on my end..

EDIT - did find this on your video view page.. picture 2

Is the same error. You have this error on top (Screenshot-15.png)

SOLVED! Using the solution inthis thread:

http://www.boonex.com/unity/forums/topic/All-Photos-grey-for-guests-and-members-OK-for-Adm.htm

Regards!