sausagenet wrote on Jun 12
th, 2012 at 12:51pm:
I'll going to follow the instruction mentioned above and see where I get,
cheers!
Considering the alternatives here, including my lack of any real knowledge about using a Windows server, I think your best course of action might be to again try a brand new install.
I admire your persistence.

By the way, I have the same problem as you do, but on a UNIX server. Like you, I've followed YaBB's instructions to the letter, and I
still have the same related problem that you have.
I'm beginning to think that both you and I may have installed a corrupted download of YaBB. I'm just reaching, but that is a possibility.
Maybe someone here with
"actual substantial knowledge" can download YaBB's current YaBB 2.5 and do what will be for them a quick install to see if something's gotten corrupted.
Edited: I'm not abandoning you, but since I don't have substantial knowledge about this subject, I'm going to step back so that you can concentrate on getting the expert help that you're seeking.
Good luck! I'm very curious about how this gets resolved.
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JonB wrote on Jun 12
th, 2012 at 12:49pm:
If you do not have actual substantial knowledge to contribute to a support problem, kindly refrain from confusing the issue.
Ironically, if you look at my track record of helping people here in this forum, I seem to be able to help them even when people with knowledge about a subject aren't able to provide a solution.
Go figure. I think it has to do more with trying than actually knowing what to do.
Also, I think it helps to have a fresh set of eyes on a problem from a regular user versus an expert who often can't see the forest because of the trees. I know that it's not uncommon for an expert to clue in on a solution after they've read through help that I've tried to give.
It's like,
"No, no, no, Bill. That's not the way to do it. This is the way to do it." 
How someone helps shouldn't matter if that help provides a solution to any given problem, or it leads to a solution. So far, even a qualified expert like you can't seem to figure out what the real problem is. So neither one of us is helping much here; at least not yet.
So how are we different here?

If it makes you feel any better, my money's on you since you actually have substantial knowledge, and as I've already qualified the help I've been trying to give, I do not.
In any case, give a guy a break for trying to help. You're seriously complaining about that?