image.php bug

[arkadia2006]

hello

the url of my clear.gif is :
/images/vbulletin/clear.gif

when i call

http://127.0.0.1/scripts/vbulletin/image.php?type=regcheck&imagehash=bb432805749fa255f107f8d17cb56e34&i=gd

i receive :

Warning: readfile(C:\InetPub\wwwroot\arkadia\scripts\vbulletin//images/vbulletin/clear.gif) [function.readfile]: failed to open stream: No such file or directory in \image.php on line 107

thank by advance