Invalid page specified

I've just uploaded a new game and get the message after trying to submit my highscore:

Invalid Page Specified

The url is:
http://www.animeonline.net/index.php?act=Arcade&do=newscore

When playing another game, it works fine, but the url show up as:
http://www.animeonline.net/arcade.php?act=Arcade&do=play&gameid=362

Does anyone know why different urls are showing?

Thank you.

[MrZeropage]

it is normal, games submit their score (hardcoded!) to index.php

so please check AdminCP -> Arcade -> Information it should detect if your index.php is not the original one from vBulletin and tell you what to do

[aacircle]

Thank you... :-) That's what I hadn't done yet. All done and hope this error doesn't occur again.

Cheers.