None of the members on my forum can post, it says Software error: Illegal modulus zero at ./Code/MessageDisplay.pl... send message to admin... Whenever a user wants to reply but posting a new thread works. What is wrong??

Please help me!

Go to Admin/Settings and save your settings.  If that doesn't fix it, your Settings.pl is not writable.  CHMOD it 777 to fix it.

It still doesn't work!

Post the contents of Settings.pl ... in a code box.

It says:

####################################################
# E-Blah Bulliten Board Systems           Platinum #
####################################################
# This file contains setup information vital to    #
# running E-Blah. Read Blah.pl for full headers.   #
# You should not edit this file manualy. Use Admin #
# Center on your Forum to change these settings.   #
####################################################

$bversion = 16;      # Version

####### Directories Sets #######
$root = ".";
$code = "./Code";
$boards = "./Boards";
$prefs = "./Prefs";
$members = "./Members";
$messages = "./Messages";
$modsdir = "./Mods";
$images = "/blahdocs/images";
$simages = "/blahdocs/Smilies";
$avsurl = "/blahdocs/Avatars";
$avdir = "/var/www/html/blahdocs/Avatars";
$realurl = "http://mysite.domain.dom/cgi-bin/MB/";
$bdocsdir = "/blahdocs";
$helpdesk = "";
$languages = "./Languages";
$templates = "/var/www/html/blahdocs/template";
$templatesu = "/blahdocs/template";
$buttons = "/blahdocs/buttons";

#######  Essential Sets  #######
$regto = qq*admin*;
$eadmin = q*contact@theadscorner.com*;
$cookpre = qq*eblah*;
$mailuse = 1;
$smaill = "/usr/sbin/sendmail";
$mailhost = "theadscorner.com ";
$emailsig = q*Don't Forget to visit us and complete offers in the Make money section to actually MAKE FREE MONEY!!!*;
$mailauth = 0;
$mailusername = 'theadcorne';
$mailpassword = 'logar2';

#######   Board Locks    #######
$maintance = 0;
$maintancer = qq~This board is being upgraded.~;
$lockout = 0;
$noguest = 0;
$creg = 0;
$serload = 0;
$gzipen = 0;

#######   Upload Prefs   #######
$uallow = 2;
$avupload = 0;
$ntsys = 0;
$uploaddir = "/var/www/html/blahdocs/uploads";
$uploadurl = "/blahdocs/uploads";
$allowedext = "";
$maxsize = "1";
$maxsize2 = ".25";

#######    Main Prefs    #######
$upbc = 1;
$noguestp = 0;
$invfri = 0;
$sppd = 0;
$al = 1;
$whereis = 0;
$showmove = 1;
$apic = 1;
$hmail = 1;
$slpoller = 1;
$BCSmile = 1;
$BCLoad = 1;
$showreg = 1;
$pmmaxquota = "0";
$maxsig = "500";
$gtoff = '0';
$datedis = 0;
$timedis = 0;
$maxmess = 15;
$maxdis = 30;
$mbname = q*theadscorner.com- Discuss Everything!*;
$picheight = "100";
$picwidth = "100";
$btod = 1;
$mtext = 0;
$amar = 1;
$sauser = 1;
$mmpp = 25;
$iptimeout = 5;
$vhtdmax = 50;
$htdmax = 25;
$enews = 0;
$showgender = 0;
$totalpp = 10;
$memguest = 0;
$gsearch = 0;
$showdes = 1;
$sall = 0;
$vradmin = 0;
$showtheme = 1;
$sview = 1;
$quickreg = 0;
$showactive = 0;
$logactive = 1;
$showevents = 0;
$reversesum = 1;
$gdisable = 0;
$redirectfix = 0;
$pmdisable = 0;
$languagep = "English";
$allowrate = 0;
$nocomma = qq~,~;
$html = 1;
@htmls = ();
$hiddenmail = 2;
$nonotify = 0;
$polltop = 1;
$pollops = "10";
$gtzone = "0";
$quickreply = 1;
$gmaxsmils = 200;
$maxmesslth = 50000;
$maxsumc = "40";
$upevents = 7;
$hideposts = 0;
$ensids = 0;
$showlocation = 0;
$enbdays = 0;
$emailadmin = 0;
$maxattempts = 0;
$loginfailtime = 0;
$enablerep = 0;
$modifytime = 1;
$gattach = 1;
$maxmodifycount = 0;
$showloggedon = 0;
$disablesn = 0;
$disabledel = 0;
$fancyqprofile = 0;
$quickmsearch = 0;
$enablecal = 0;
$showads = 100000000;
$displayadverts = qq~~;
$disableads = "";

#######     Logging      #######
$eclick = 0;
$uextlog = 1;
$kelog = 1;
$logip = 1;
$logcnt = "60";
$logdays = 365;
$activeuserslog = 15;
$hideclog = 1;
$hideelog = 1;

#######       News       #######
$newsboard = "cc";
$newsshow = 5;
$newslength = 200;

#######       MODS       #######
$yabbconver = 0;
$encryption = 0;
$md5upgrade = 0;
1;

Reupload everything in the /Code directory and try again.

It worked thankx