When I tried this in 3.0.7 I got a messge telling me that index.php was a directory. Not sure if something has changed in this release.
Then when I looked at it in a browser I noticed an extra couple of slashes in there. Not even sure where to begin trying to find out where they might be getting inserted. I thought I would ask here.
http://www.clicksentry.com/forums/archive/index.php .
<edit>I am an idiot. I did not set up this installation of vbulletin and needless to say it was not so clean. Found the file. But, the extra slashes still are a problem