I would hazard a guess that it's still a related problem - the registrants are putting in names that have unacceptable characters in them, bolluxing up the .pre files AND bolluxing up the errorlog when it tries to document the error.

Can't guarantee it BUT, when my 'working' forum was on 2.4 way back when, I saw a lot of these. Haven't seen one in ages since going to 2.5.2.

In this case I think other bad characters (as in symbols) are sneaking through, too.

RSS needs to be checked, and Print. (Those do get legitimately called from outside the domain.) The others really shouldn't need to be checked unless you know that someone is showing your recent topics or such on their website and you're okay with that.

Just so you know - my personal take is to start as strict as possible and loosen up when/if members come back and say they've started having problems. On my own forums the only things I have checked is RSS, print and the 3 loginout routines and that's because, on one forum, I have a secondary domain pointing to the primary domain and that causes issues when being forwarded from. Most people won't have that problem.

Dandello wrote on Jun 20^th, 2013 at 3:49pm:

Edited:

Dandello is most certainly an expert on how YaBB operates. However, I respectfully disagree have a different opinion than she has on this one because I know what's working in our forum.

I've seen YaBB forums be so restrictive with the way they use Referrer Security that those forums become very user unfriendly. Particularly when a forum doesn't have an easy way to send a message to its administrator or to the site's webmaster, and a great many forums do not provide this, it's not likely that problems will be reported. People will simply stay away.

Hint: The better your forum is at stopping spam-bots, the more generous you can be in allowing actions from outside domains.

Particularly with the use of ggn's anti-spam CAPTCHA hack, Referral Security Checking is no longer necessary despite what "experts" will tell you (you can read more about that here). I've disabled it entirely in our forum without any problems.

Keep in mind that I'm not a YaBB expert, just a regular admin with a fair knowledge of how YaBB works, and yet, the forum I operate no longer has problems with spam-bots. So if I can do this, pretty much anybody can.

If you've noticed, there seem to be quite a few YaBB forums that have registration disabled (registration is processed via email). You could do that, too, but how restrictive do you really want to be?

Edited:

Whatever is working for you, that's the way to continue.

As for future upgrades, Dandello is the go to person for that.

Like our forum, you're using the 2.4 version. YaBB 2.5.2 is the latest release, but I wouldn't recommend upgrading until the one after that (currently 2.5.4 although that may change to version 2.6 at some point... not sure how that works).