diff --git a/Courses.php b/Courses.php
index 88d7ad3..ed7c864 100644
--- a/Courses.php
+++ b/Courses.php
@@ -139,7 +139,7 @@ New Date/Time <br><input type="date" name="date" required=""> <input type="time"
     
     $sql = "UPDATE `lab_reports_table` SET `Deadline` = ('" . $Deadline . "'), `Instructions` = ('" . $instructions . "'), `Title` = ('" . $title . "'), `Marks` = ('" . $marks . "') WHERE `lab_reports_table`.`Lab_Report_ID` = '$getid'";
     if ($con->query($sql) === TRUE) {
-      $_SESSION["info_Updated"]="Information Updated Successfull";
+      $_SESSION["info_updated"]="Assignment information updated successfully.";
        
    } else {
        echo "Error: " . $sql . "<br>" . $con->error;
@@ -253,9 +253,9 @@ Submission Type  <input type='radio' name='type' value='Individual' required=''>
             echo "<div class='col-md-7'>  <h3> Lab Report Assignment list </h3>";  
                   
  error_reporting(0);
- if(isset($_SESSION["info_Updated"])){
-  echo '<hr><div class="alert alert-info" role="alert">' . $_SESSION['info_Updated'] . '</div>';
-  $_SESSION['info_Updated'] = null;
+ if(isset($_SESSION["info_updated"])){
+  echo '<hr><div class="alert alert-info" role="alert">' . $_SESSION['info_updated'] . '</div>';
+  $_SESSION['info_updated'] = null;
  }
 if (isset($_SESSION['info_courses'])) {
     echo '<hr><div class="alert alert-info" role="alert">' . $_SESSION['info_courses'] . '</div>';
diff --git a/Script.php b/Script.php
index 5adff14..a09609c 100644
--- a/Script.php
+++ b/Script.php
@@ -827,7 +827,13 @@ if(strlen($_FILES['attachment1']['name']) > 2 ) {
      if ($con->query($sql1) === TRUE) {
      }
      
-    
+
+    // When $group_id is not properly initialized, use integer 0 as its value.
+    // This temporarily fixed the "Students unable to submit assignment after a recent change" bug at http://118.25.96.118/bugzilla/show_bug.cgi?id=65
+    if (trim($group_id) === '') { // when $group_id is an empty string or contains only whitespace characters.
+         $group_id = 0; // FIXME
+    }
+
     $sql="INSERT INTO `lab_report_submissions`(`Submission_Date`, `Lab_Report_ID`, `Student_id`,"
             . " `Course_Group_id`, `Attachment1`, `Notes`, `Attachment2`, `Attachment3`, `Attachment4`, `Status`, `Title`,`Remarking_Reason`)"
             . " VALUES ('$date',$lab_id,$student_id,$group_id,'$targetfile','$instructions','$targetfile2','$targetfile3','$targetfile4',"