diff --git a/attract/static/js/tasks.js b/attract/static/js/tasks.js
index fc9f753..bd2283f 100644
--- a/attract/static/js/tasks.js
+++ b/attract/static/js/tasks.js
@@ -36,8 +36,7 @@
  */
 function task_open(task_id, project_url) {
     if (task_id === undefined || project_url === undefined) {
-        if (console) console.log("task_open(", task_id, project_url, ") called.");
-        return;
+        throw new ReferenceError("task_open(" + task_id + ", " + project_url + ") called.");
     }
 
     $('#col_right .col_header span.header_text').text('Task details');
@@ -63,8 +62,7 @@ function task_open(task_id, project_url) {
  */
 function shot_open(shot_id, project_url) {
     if (shot_id === undefined || project_url === undefined) {
-        if (console) console.log("shot_open(", shot_id, project_url, ") called.");
-        return;
+        throw new ReferenceError("shot_open(" + shot_id + ", " + project_url + ") called.");
     }
 
     $('#col_right .col_header span.header_text').text('Shot details');
@@ -91,8 +89,7 @@ function shot_open(shot_id, project_url) {
  */
 function task_create(shot_id, project_url, task_type) {
     if (shot_id === undefined || project_url === undefined || task_type === undefined) {
-        if (console) console.log("task_create(", shot_id, project_url, task_type, ") called.");
-        return;
+        throw "task_create(" + shot_id + ", " + project_url+ ", " + task_type + ") called.";
     }
     var url = '/attract/' + project_url + '/tasks/create';
 
@@ -116,6 +113,11 @@ function task_create(shot_id, project_url, task_type) {
 
 function attract_form_save(form_id, item_id, item_save_url, options={})
 {
+    // Mandatory option.
+    if (typeof options.type === 'undefined') {
+        throw 'attract_form_save(): options.type is mandatory.';
+    }
+
     var $form = $('#' + form_id);
     var $button = $form.find("button[type='submit']");
 
@@ -139,7 +141,7 @@ function attract_form_save(form_id, item_id, item_save_url, options={})
         })
         .fail(function(xhr_or_response_data) {
             // jQuery sends the response data (if JSON), or an XHR object (if not JSON).
-            if (console) console.log('Failed saving', xhr_or_response_data);
+            if (console) console.log('Failed saving', options.type, xhr_or_response_data);
 
             $button.removeClass('btn-default').addClass('btn-danger');
             $('#status-bar').text('Failed saving. ' + xhr_or_response_data.status);