Reply with quote not working

[Sforums]

Please I need help. I'm using vB4 and after migration button Reply with Quote isn't work.
When I click, wait cursor is present but nothing happend.
In this moment when I click I can see error log:

PHP Fatal error: Call-time pass-by-reference has been removed in /public_html/ajax.php(91) : eval()'d code on line 152

Please, I need help. Thank you.

EDIT:

When I add in config.php
define('DISABLE_HOOKS', true);

everything works.

[Stratis]

You must disable modifications one by one to see which one is causing the problem.