Register error

ok, this is the code from the same area of my register.php page

if ($pun_config['o_regs_verify'] == '1')
    {
        $email2 = strtolower(trim($_POST['req_email2']));

        $password1 = random_pass(8);
        $password2 = $password1;
    }
    else
    {
        $password1 = trim($_POST['req_password1']);
        $password2 = trim($_POST['req_password2']);
    }

On first glance it looks the same as what you posted.

What's even funnier is I run another site with a punBB board, and it works fine. So I even tried taking its register.php page and using it to replace the one on the board I'm having trouble on...and it still doesn't work. That kinda tells me that maybe the problem is with another page rather than the register.php page.

It's also important to note that this board I'm having trouble on was hacked before I could do the update (the update issued before this most recent one). What I ended up doing was deleting the old board's files entirely, and just uploading and installing all new files that were of the latest update package at the time. It seemed to work ok except for this registration issue and the fact that my custom skin no longer works.
On my other site, I got to update that one before it was hacked so I never did have these problems with it. Still, it seems like if I just started over with all new files and an install, everything should still work properly. Unless...me keeping the old database has something to do with this (i.e. I kept the old db so posts up to my last backup were preserved, but the files for the actual board were totally replaced).

I have gotten the most recent update to install properly, but this registration issue is still lingering. Perhaps someone more schooled in php and databases can shed some light on why I'm having trouble with the board in question.

I thank you in advance for your time and advice.

ok, this is what I was told after the query:

MySQL said:  

#1064 - You have an error in your SQL syntax near '[prefix]config where conf_name="o_regs_verify" LIMIT 0, 30' at line 1

so...am I right in assuming something in my config file is mucking up the works here?

I did change the prefix to my table prefix. I just edited that part out when pasting it here.

Obviously I don't know what the results are telling me, hence the need for help.

ok, I browsed the config table in mysql and saw many items that started with the o_ thing, but nothing that read o_regs_verify. So I'm either looking at the wrong table or this could be precisely what's wrong.

I'm sorry if I'm slow to catch on, but the finer points of databases isn't my strong suit. I thank you for bearing with me - and for all the help so far!

doh! I missed the obvious again!

Ok, I found the line with o_regs_verify - and there is no value set for it. I take it this is the problem? And I should set the value to 1, right?