[postcd]

thx,no it was not plugin issue.

Here is the fix:
http://www.vbulletin.com/forum/forum...-forum-php-php[arg-3-undefined]?p=3278149#post3278149

Search phrasses for: php{3}

and it finds something, then it should be:

<li><a href="{2}">Go to forums index</a></li>

not:

{2}.php{3}

or similar

I hope i did it right, but after logout, it just goes to index. Im unsure why this bug happend.