"Report Abuse" form not working

I found a post that was spamming for a product and clicked the "More" >> "Report Abuse" link. It takes me to the form here: http://powershell.com/cs/forums/ReportAbuse.aspx?ForumID=1&ReportPostID=[postID]

Upon filling it out and hitting the "post" button, I get sent to this URL: http://powershell.com/cs/msgs/default.aspx?MessageID=6

And receive this error: Not Found: Resource Not Found The resource you requested does not exist.