diff --git a/lang/en_utf8/error.php b/lang/en_utf8/error.php
index 80e6518fdeb..ee3ba16c759 100644
--- a/lang/en_utf8/error.php
+++ b/lang/en_utf8/error.php
@@ -16,8 +16,10 @@ $string['cannotaddnewmodule'] = 'Could not add a new instance of $a';
 $string['cannotaddcoursemodule'] = 'Could not add a new course module';
 $string['cannotaddcmtosection'] = 'Could not add the new course module to that section';
 $string['cannotsaveconfig'] = 'Problem saving config \"$a[0]\" as \"$a[1]\" for plugin \"$a[2]\"'; 
+$string['cannotsavecomment'] = 'Cannot save comment';
 $string['cannotsavefile'] = 'Cannot save the file\"$a[0]\/$a[1]\"!';
 $string['cannotcreatebackupdir'] = 'Could not create backupdata folder.  The site administrator needs to fix the file permissions';
+$string['cannotcreatedefaultcat'] = 'Error creating a default category for context $a';
 $string['cannotcreategroup'] = 'Error creating group';
 $string['cannotcreatelangdir'] = 'Cannot create lang dir.';
 $string['cannotcreatelangbase'] = 'Error: Could not create base lang directory.';
@@ -47,6 +49,7 @@ $string['cannotfindlang'] = 'Cannot find \"$a\" language pack!';
 $string['cannotfindsite'] = 'Cannot find site-level course';
 $string['cannotimportgrade'] = 'Grade import error';
 $string['cannotnetgeo'] = 'Can not connect to NetGeo server at http://netgeo.caida.org, please check proxy settings or better install MaxMind GeoLite City data file.';
+$string['cannotgetcats'] = 'error getting category record';
 $string['cannotgradeuser'] = 'Can not grade this user';
 $string['cannotmapfield'] = 'mapping collision detected, 2 fields maps to the same grade item $a';
 $string['cannotmarktopic'] = 'Could not mark that topic for this course';
diff --git a/lang/en_utf8/question.php b/lang/en_utf8/question.php
index 3cd0232d9a3..b4a7fa02eb9 100644
--- a/lang/en_utf8/question.php
+++ b/lang/en_utf8/question.php
@@ -4,6 +4,9 @@
 $string['adminreport'] = 'Report on possible problems in your question database.';
 $string['broken'] = 'This is a \"broken link\", it points to a nonexistent file.';
 $string['byandon'] = 'by <em>$a->user</em> on <em>$a->time</em>';
+$string['cannotinsert'] = 'Could not insert entry in question_sessions';
+$string['cannotcreate'] = 'Could not create new entry in question_attempts table';
+$string['cannotsavequiz'] = 'Failed to save the current quiz attempt!';
 $string['categorydoesnotexist'] = 'This category does not exist';
 $string['categorycurrent'] = 'Current Category';
 $string['categorycurrentuse'] = 'Use This Category';
@@ -40,6 +43,7 @@ $string['exportcategory'] = 'Export category';
 $string['filesareasite']= 'the site files area';
 $string['filesareacourse']= 'the course files area';
 $string['filestomove']= 'Move / copy files to $a?';
+$string['formquestionnotinids'] = 'Form contained question that is not in questionids';
 $string['fractionsnomax'] = 'One of the answers should have a score of 100%% so it is possible to get full marks for this question.';
 $string['getcategoryfromfile'] = 'Get category from file';
 $string['getcontextfromfile'] = 'Get context from file';
diff --git a/lib/questionlib.php b/lib/questionlib.php
index d2a7f00883e..d9ecc9683fb 100644
--- a/lib/questionlib.php
+++ b/lib/questionlib.php
@@ -1025,7 +1025,7 @@ function save_question_session(&$question, &$state) {
         $session->sumpenalty = $state->sumpenalty;
         $session->manualcomment = $state->manualcomment;
         if (!insert_record('question_sessions', $session)) {
-            print_error('Could not insert entry in question_sessions');
+            print_error('cannotinsert', 'question');
         }
     } else {
         $session->newest = $state->id;
@@ -1102,7 +1102,7 @@ function question_extract_responses($questions, $formdata, $defaultevent=QUESTIO
         if (false !== ($quid = question_get_id_from_name_prefix($key))) {
             // check if this is a valid id
             if (!isset($questions[$quid])) {
-                print_error('Form contained question that is not in questionids');
+                print_error('formquestionnotinids', 'question');
             }
 
             // Remove the name prefix from the name
@@ -1511,7 +1511,7 @@ function get_question_image($question) {
     $img = '';
 
     if (!$category = get_record('question_categories', 'id', $question->category)){
-        print_error('invalid category id '.$question->category);
+        print_error('invalidcategory');
     }
     $coursefilesdir = get_filesdir_from_context(get_context_instance_by_id($category->contextid));
 
@@ -1555,7 +1555,7 @@ function question_process_comment($question, &$state, &$attempt, $comment, $grad
     $comment = trim($comment);
     $state->manualcomment = $comment;
     if (!set_field('question_sessions', 'manualcomment', $comment, 'attemptid', $attempt->uniqueid, 'questionid', $question->id)) {
-        print_error("Cannot save comment");
+        print_error('cannotsavecomment');
     }
 
     // Update the attempt if the score has changed.
@@ -1563,7 +1563,7 @@ function question_process_comment($question, &$state, &$attempt, $comment, $grad
         $attempt->sumgrades = $attempt->sumgrades - $state->last_graded->grade + $grade;
         $attempt->timemodified = time();
         if (!update_record('quiz_attempts', $attempt)) {
-            print_error('Failed to save the current quiz attempt!');
+            print_error('cannotsavequiz');
         }
     }
 
@@ -1639,7 +1639,7 @@ function question_new_attempt_uniqueid($modulename='quiz') {
     $attempt = new stdClass;
     $attempt->modulename = $modulename;
     if (!$id = insert_record('question_attempts', $attempt)) {
-        print_error('Could not create new entry in question_attempts table');
+        print_error('cannotcreate', 'question');
     }
     return $id;
 }
@@ -1883,7 +1883,7 @@ function question_make_default_categories($contexts) {
     // If it already exists, just return it.
     foreach ($contexts as $key => $context) {
         if (!$categoryrs = get_recordset_select("question_categories", "contextid = '{$context->id}'", 'sortorder, name', '*', '', 1)) {
-            print_error('error getting category record');
+            print_error('cannotgetcats');
         } else {
             if (!$category = rs_fetch_record($categoryrs)){
                 // Otherwise, we need to make one
@@ -1896,7 +1896,7 @@ function question_make_default_categories($contexts) {
                 $category->sortorder = 999; // By default, all categories get this number, and are sorted alphabetically.
                 $category->stamp = make_unique_id_code();
                 if (!$category->id = insert_record('question_categories', $category)) {
-                    print_error('Error creating a default category for context '.print_context_name($context));
+                    print_error('cannotcreatedefaultcat', '', '', print_context_name($context));
                 }
             }
         }
@@ -2309,7 +2309,7 @@ function get_filesdir_from_context($context){
             $courseid = SITEID;
             break;
         default :
-            print_error('Unsupported contextlevel in category record!');
+            print_error('invalidcontext');
     }
     return $courseid;
 }