Dear Hans,
I don't know the status of the Rochester server, but stuff is being moved to the MAA server. In particular, the page you want is:
http://webwork.maa.org/wiki/Available_Functions
Probably the file you are getting the wrong link from is
/opt/webwork/webwork2/conf/snippets/setHeader.pg
(your path my vary).
And I _think_ I read when this came up before that the link is correct in the latest CVS release, but I don't have that either.
Hal