problem in Edit Forum Permissions (Access Masks)

[3shahrsaz]

I have some problem in Edit Forum Permissions (Access Masks) for users . when i want to give some access to any users , see this error : Invalid User Specified and i cant save it. please help me how fix this problem?

my website is : www.noandishaan.com/forums

[nocive]

i´ve the same problem, i cant edit some user

when i try to edit the mask access, this message appears "Invalid User Specified"

[3shahrsaz]

nobody can help me?

[Lynne]

Try disabling your modifications/plugins and see if you still have this problem.
Note: To temporarily disable the plugin system, edit includes/config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

[3shahrsaz]

thank u for your reply but I disable and add this code in config but still have this problem

[Lynne]

Please disable vbseo via it's control panel and also remove the .htaccess file for it. Then see if you still have the same problem.