[Xenon]

in your poll.php you'll find that:

PHP Code:

    if ($pollinfo['multiple']) {
      $insertsql = "";
       while (list($val, $vote)=each($optionnumber)) {
         if ($vote == "yes") {
           if ($insertsql) {
             $insertsql .= ",";
           }
           $insertsql .= "('$pollid','$ourtimenow','$val','$bbuserinfo[userid]')";
        }
      } 


add below it:

PHP Code:

if(substr_count($insertsql,"(")>3) {
  eval("standarderror(\"You can just vote 3 options.\");");
}