Error - You Should Fill In A Username

[QuinnMarket]

YaBB SE Version: 1.5.5
PHP Version: 4.3.0 to 4.3.3
MySQL Version: 4.0.x
Server Platform: Unix, Linux, or BSD
Link to Forum: http://forums.quinnmarket.buildtolearn.net

Problem Description:
More Issues...
For some reason, every time I try to long into my forums now I get the following error:

An Error Has Occurred!

You should fill in a username. -

Does anyone have any clue what has happened.  I do not believe that it is due to anything that I did...

[[Unknown]]

You're using some sort of redirection.

-[Unknown]

[QuinnMarket]

Ah, so that's the problem.  I assume there's nothing I can do to save the redirection and still have the board working...

[[Unknown]]

You can keep the redirection as long as you change the Forum's URL to be what it's redirected to.

Like this, let's say:

Your URL is www.abcdef-forums.com.
That redirects to forums.abcdef.com.

Right now, you're $boardurl in Settings.php is still set to www.abcdef-forums.com, so nothing is going to work.  If you change it to forums.abcdef.com THERE, then both links will work.  Everything will then be dandy.

-[Unknown]

[QuinnMarket]

Thanks, once again.  Let's hope this is the last time you have to see me...