diff --git a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-debug.js b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-debug.js
index b2bda07ae9e..b59834ae0ba 100644
--- a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-debug.js
+++ b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-debug.js
@@ -81,6 +81,9 @@ Y.extend(SHORTFORMS, Y.Base, {
         form.delegate('click', this.switch_state, SELECTORS.FIELDSETLEGENDLINK, this);
         form.delegate('key', this.switch_state, 'down:enter,32', SELECTORS.FIELDSETLEGENDLINK, this);
 
+        // Handle event, when there's an error in collapsed section.
+        Y.Global.on(M.core.globalEvents.FORM_ERROR, this.expand_fieldset, this);
+
         // Make the collapse/expand a link.
         btn = form.one(SELECTORS.COLLAPSEEXPAND);
         if (btn) {
@@ -232,7 +235,24 @@ Y.extend(SHORTFORMS, Y.Base, {
         }
 
         return this;
-    }
+    },
+    /**
+     * Expand the fieldset, which contains an error.
+     *
+     * @method expand_fieldset
+     * @param {EventFacade} e
+     */
+    expand_fieldset: function(e) {
+        e.stopPropagation();
+        var formid = e.formid;
+        if (formid === this.form.getAttribute('id')) {
+            var errorfieldset = Y.one('#' + e.elementid).ancestor('fieldset');
+            if (errorfieldset) {
+                this.set_state(errorfieldset, false);
+            }
+
+        }
+   }
 }, {
     NAME: 'moodle-form-shortforms',
     ATTRS: ATTRS
@@ -244,4 +264,4 @@ M.form.shortforms = M.form.shortforms || function(params) {
 };
 
 
-}, '@VERSION@', {"requires": ["node", "base", "selector-css3"]});
+}, '@VERSION@', {"requires": ["node", "base", "selector-css3", "moodle-core-event"]});
diff --git a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-min.js b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-min.js
index 3c3331e7dd2..d84fc92a3df 100644
--- a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-min.js
+++ b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms-min.js
@@ -1 +1 @@
-YUI.add("moodle-form-shortforms",function(e,t){function n(){n.superclass.constructor.apply(this,arguments)}var r={COLLAPSEEXPAND:".collapsible-actions .collapseexpand",COLLAPSED:".collapsed",FIELDSETCOLLAPSIBLE:"fieldset.collapsible",FIELDSETLEGENDLINK:"fieldset.collapsible .fheader",FHEADER:".fheader",LEGENDFTOGGLER:"legend.ftoggler"},i={COLLAPSEALL:"collapse-all",COLLAPSED:"collapsed",FHEADER:"fheader"},s={};s.formid={value:null},e.extend(n,e.Base,{form:null,initializer:function(){var t=e.one("#"+this.get("formid")),n,i,s,o;if(!t)return;this.form=t,n=t.all(r.FIELDSETCOLLAPSIBLE),n.each(this.process_fieldset,this),t.delegate("click",this.switch_state,r.FIELDSETLEGENDLINK,this),t.delegate("key",this.switch_state,"down:enter,32",r.FIELDSETLEGENDLINK,this),i=t.one(r.COLLAPSEEXPAND),i&&(s=e.Node.create('<a href="#"></a>'),s.setHTML(i.getHTML()),s.setAttribute("class",i.getAttribute("class")),s.setAttribute("role","button"),o=[],t.all(r.FIELDSETLEGENDLINK).each(function(e){o[o.length]=e.generateID()}),s.setAttribute("aria-controls",o.join(" ")),s.on("click",this.set_state_all,this,!0),s.on("key",this.set_state_all,"down:enter,32",this,!0),i.replace(s),this.update_btns(t))},process_fieldset:function(t){var n=t.one(r.LEGENDFTOGGLER),s=e.Node.create('<a href="#"></a>');return s.addClass(i.FHEADER),s.appendChild(n.get("firstChild")),s.setAttribute("role","button"),s.setAttribute("aria-controls",t.generateID()),n.ancestor(r.COLLAPSED)?s.setAttribute("aria-expanded","false"):s.setAttribute("aria-expanded","true"),n.prepend(s),this},set_state:function(e,t){headerlink=e.one(r.FHEADER),t?(e.addClass(i.COLLAPSED),headerlink&&headerlink.setAttribute("aria-expanded","false")):(e.removeClass(i.COLLAPSED),headerlink&&headerlink.setAttribute("aria-expanded","true"));var n=this.form.one("input[name=mform_isexpanded_"+e.get("id")+"]");return n?(n.set("value",t?0:1),this):this},set_state_all:function(e){e.preventDefault();var t=e.target.hasClass(i.COLLAPSEALL),n=this.form.all(r.FIELDSETCOLLAPSIBLE);n.each(function(e){this.set_state(e,t)},this),this.update_btns()},switch_state:function(e){e.preventDefault();var t=e.target.ancestor(r.FIELDSETCOLLAPSIBLE);this.set_state(t,!t.hasClass(i.COLLAPSED)),this.update_btns()},update_btns:function(){var e,t=0,n=!1,s;return e=this.form.one(r.COLLAPSEEXPAND),e?(s=this.form.all(r.FIELDSETCOLLAPSIBLE),s.each(function(e){e.hasClass(i.COLLAPSED)&&t++}),t!==0&&(n=!0),n?(e.removeClass(i.COLLAPSEALL),e.setHTML(M.util.get_string("expandall","moodle"))):(e.addClass(i.COLLAPSEALL),e.setHTML(M.util.get_string("collapseall","moodle"))),this):this}},{NAME:"moodle-form-shortforms",ATTRS:s}),M.form=M.form||{},M.form.shortforms=M.form.shortforms||function(e){return new n(e)}},"@VERSION@",{requires:["node","base","selector-css3"]});
+YUI.add("moodle-form-shortforms",function(e,t){function n(){n.superclass.constructor.apply(this,arguments)}var r={COLLAPSEEXPAND:".collapsible-actions .collapseexpand",COLLAPSED:".collapsed",FIELDSETCOLLAPSIBLE:"fieldset.collapsible",FIELDSETLEGENDLINK:"fieldset.collapsible .fheader",FHEADER:".fheader",LEGENDFTOGGLER:"legend.ftoggler"},i={COLLAPSEALL:"collapse-all",COLLAPSED:"collapsed",FHEADER:"fheader"},s={};s.formid={value:null},e.extend(n,e.Base,{form:null,initializer:function(){var t=e.one("#"+this.get("formid")),n,i,s,o;if(!t)return;this.form=t,n=t.all(r.FIELDSETCOLLAPSIBLE),n.each(this.process_fieldset,this),t.delegate("click",this.switch_state,r.FIELDSETLEGENDLINK,this),t.delegate("key",this.switch_state,"down:enter,32",r.FIELDSETLEGENDLINK,this),e.Global.on(M.core.globalEvents.FORM_ERROR,this.expand_fieldset,this),i=t.one(r.COLLAPSEEXPAND),i&&(s=e.Node.create('<a href="#"></a>'),s.setHTML(i.getHTML()),s.setAttribute("class",i.getAttribute("class")),s.setAttribute("role","button"),o=[],t.all(r.FIELDSETLEGENDLINK).each(function(e){o[o.length]=e.generateID()}),s.setAttribute("aria-controls",o.join(" ")),s.on("click",this.set_state_all,this,!0),s.on("key",this.set_state_all,"down:enter,32",this,!0),i.replace(s),this.update_btns(t))},process_fieldset:function(t){var n=t.one(r.LEGENDFTOGGLER),s=e.Node.create('<a href="#"></a>');return s.addClass(i.FHEADER),s.appendChild(n.get("firstChild")),s.setAttribute("role","button"),s.setAttribute("aria-controls",t.generateID()),n.ancestor(r.COLLAPSED)?s.setAttribute("aria-expanded","false"):s.setAttribute("aria-expanded","true"),n.prepend(s),this},set_state:function(e,t){headerlink=e.one(r.FHEADER),t?(e.addClass(i.COLLAPSED),headerlink&&headerlink.setAttribute("aria-expanded","false")):(e.removeClass(i.COLLAPSED),headerlink&&headerlink.setAttribute("aria-expanded","true"));var n=this.form.one("input[name=mform_isexpanded_"+e.get("id")+"]");return n?(n.set("value",t?0:1),this):this},set_state_all:function(e){e.preventDefault();var t=e.target.hasClass(i.COLLAPSEALL),n=this.form.all(r.FIELDSETCOLLAPSIBLE);n.each(function(e){this.set_state(e,t)},this),this.update_btns()},switch_state:function(e){e.preventDefault();var t=e.target.ancestor(r.FIELDSETCOLLAPSIBLE);this.set_state(t,!t.hasClass(i.COLLAPSED)),this.update_btns()},update_btns:function(){var e,t=0,n=!1,s;return e=this.form.one(r.COLLAPSEEXPAND),e?(s=this.form.all(r.FIELDSETCOLLAPSIBLE),s.each(function(e){e.hasClass(i.COLLAPSED)&&t++}),t!==0&&(n=!0),n?(e.removeClass(i.COLLAPSEALL),e.setHTML(M.util.get_string("expandall","moodle"))):(e.addClass(i.COLLAPSEALL),e.setHTML(M.util.get_string("collapseall","moodle"))),this):this},expand_fieldset:function(t){t.stopPropagation();var n=t.formid;if(n===this.form.getAttribute("id")){var r=e.one("#"+t.elementid).ancestor("fieldset");r&&this.set_state(r,!1)}}},{NAME:"moodle-form-shortforms",ATTRS:s}),M.form=M.form||{},M.form.shortforms=M.form.shortforms||function(e){return new n(e)}},"@VERSION@",{requires:["node","base","selector-css3","moodle-core-event"]});
diff --git a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms.js b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms.js
index 87e51993029..875eac3e9b4 100644
--- a/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms.js
+++ b/lib/form/yui/build/moodle-form-shortforms/moodle-form-shortforms.js
@@ -80,6 +80,9 @@ Y.extend(SHORTFORMS, Y.Base, {
         form.delegate('click', this.switch_state, SELECTORS.FIELDSETLEGENDLINK, this);
         form.delegate('key', this.switch_state, 'down:enter,32', SELECTORS.FIELDSETLEGENDLINK, this);
 
+        // Handle event, when there's an error in collapsed section.
+        Y.Global.on(M.core.globalEvents.FORM_ERROR, this.expand_fieldset, this);
+
         // Make the collapse/expand a link.
         btn = form.one(SELECTORS.COLLAPSEEXPAND);
         if (btn) {
@@ -229,7 +232,24 @@ Y.extend(SHORTFORMS, Y.Base, {
         }
 
         return this;
-    }
+    },
+    /**
+     * Expand the fieldset, which contains an error.
+     *
+     * @method expand_fieldset
+     * @param {EventFacade} e
+     */
+    expand_fieldset: function(e) {
+        e.stopPropagation();
+        var formid = e.formid;
+        if (formid === this.form.getAttribute('id')) {
+            var errorfieldset = Y.one('#' + e.elementid).ancestor('fieldset');
+            if (errorfieldset) {
+                this.set_state(errorfieldset, false);
+            }
+
+        }
+   }
 }, {
     NAME: 'moodle-form-shortforms',
     ATTRS: ATTRS
@@ -241,4 +261,4 @@ M.form.shortforms = M.form.shortforms || function(params) {
 };
 
 
-}, '@VERSION@', {"requires": ["node", "base", "selector-css3"]});
+}, '@VERSION@', {"requires": ["node", "base", "selector-css3", "moodle-core-event"]});
diff --git a/lib/form/yui/src/shortforms/js/shortforms.js b/lib/form/yui/src/shortforms/js/shortforms.js
index 98e4035df8c..c220f3c3dae 100644
--- a/lib/form/yui/src/shortforms/js/shortforms.js
+++ b/lib/form/yui/src/shortforms/js/shortforms.js
@@ -79,6 +79,9 @@ Y.extend(SHORTFORMS, Y.Base, {
         form.delegate('click', this.switch_state, SELECTORS.FIELDSETLEGENDLINK, this);
         form.delegate('key', this.switch_state, 'down:enter,32', SELECTORS.FIELDSETLEGENDLINK, this);
 
+        // Handle event, when there's an error in collapsed section.
+        Y.Global.on(M.core.globalEvents.FORM_ERROR, this.expand_fieldset, this);
+
         // Make the collapse/expand a link.
         btn = form.one(SELECTORS.COLLAPSEEXPAND);
         if (btn) {
@@ -230,7 +233,24 @@ Y.extend(SHORTFORMS, Y.Base, {
         }
 
         return this;
-    }
+    },
+    /**
+     * Expand the fieldset, which contains an error.
+     *
+     * @method expand_fieldset
+     * @param {EventFacade} e
+     */
+    expand_fieldset: function(e) {
+        e.stopPropagation();
+        var formid = e.formid;
+        if (formid === this.form.getAttribute('id')) {
+            var errorfieldset = Y.one('#' + e.elementid).ancestor('fieldset');
+            if (errorfieldset) {
+                this.set_state(errorfieldset, false);
+            }
+
+        }
+   }
 }, {
     NAME: 'moodle-form-shortforms',
     ATTRS: ATTRS
diff --git a/lib/form/yui/src/shortforms/meta/shortforms.json b/lib/form/yui/src/shortforms/meta/shortforms.json
index 7d6bb01145e..768ab2863a1 100644
--- a/lib/form/yui/src/shortforms/meta/shortforms.json
+++ b/lib/form/yui/src/shortforms/meta/shortforms.json
@@ -3,7 +3,8 @@
         "requires": [
             "node",
             "base",
-            "selector-css3"
+            "selector-css3",
+            "moodle-core-event"
         ]
     }
 }
diff --git a/lib/formslib.php b/lib/formslib.php
index 42814cd3fdf..d7db5fe3fd4 100644
--- a/lib/formslib.php
+++ b/lib/formslib.php
@@ -2229,6 +2229,8 @@ function validate_' . $this->_formName . '_' . $escapedElementName . '(element)
   ret = validate_' . $this->_formName . '_' . $escapedElementName.'(frm.elements[\''.$elementName.'\']) && ret;
   if (!ret && !first_focus) {
     first_focus = true;
+    Y.Global.fire(M.core.globalEvents.FORM_ERROR, {formid: \''. $this->_attributes['id'] .'\',
+                                                   elementid: \'id_error_'.$elementName.'\'});
     document.getElementById(\'id_error_'.$elementName.'\').focus();
   }
 ';
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event-debug.js b/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
index 9bb34797b66..cbf3e398621 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event-debug.js
@@ -44,6 +44,17 @@ M.core.event = {
     FILTER_CONTENT_UPDATED: "filter-content-updated"
 };
 
+M.core.globalEvents = {
+    /**
+     * This event is triggered when form has an error
+     *
+     * @event "form_error"
+     * @param formid {string} Id of form with error.
+     * @param elementid {string} Id of element with error.
+     */
+    FORM_ERROR: "form_error"
+};
+
 
 var eventDefaultConfig = {
     emitFacade: true,
@@ -58,6 +69,8 @@ var eventDefaultConfig = {
     }
 };
 
+// Publish events with a custom config here.
+
 // Publish all the events with a standard config.
 var key;
 for (key in M.core.event) {
@@ -66,7 +79,12 @@ for (key in M.core.event) {
     }
 }
 
-// Publish events with a custom config here.
+//Publish all the global events.
+for (key in M.core.globalEvents) {
+    if (M.core.globalEvents.hasOwnProperty(key)) {
+        Y.Global.publish(M.core.globalEvents[key], Y.merge(eventDefaultConfig, {broadcast: 2}));
+    }
+}
 
 
 }, '@VERSION@', {"requires": ["event-custom"]});
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event-min.js b/lib/yui/build/moodle-core-event/moodle-core-event-min.js
index b0168680ce5..426af2f01e0 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event-min.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event-min.js
@@ -1 +1 @@
-YUI.add("moodle-core-event",function(e,t){var n="moodle-core-event";M.core=M.core||{},M.core.event={FILTER_CONTENT_UPDATED:"filter-content-updated"};var r={emitFacade:!0,defaultFn:function(e){},preventedFn:function(e){},stoppedFn:function(e){}},i;for(i in M.core.event)M.core.event.hasOwnProperty(i)&&e.publish(M.core.event[i],r)},"@VERSION@",{requires:["event-custom"]});
+YUI.add("moodle-core-event",function(e,t){var n="moodle-core-event";M.core=M.core||{},M.core.event={FILTER_CONTENT_UPDATED:"filter-content-updated"},M.core.globalEvents={FORM_ERROR:"form_error"};var r={emitFacade:!0,defaultFn:function(e){},preventedFn:function(e){},stoppedFn:function(e){}},i;for(i in M.core.event)M.core.event.hasOwnProperty(i)&&e.publish(M.core.event[i],r);for(i in M.core.globalEvents)M.core.globalEvents.hasOwnProperty(i)&&e.Global.publish(M.core.globalEvents[i],e.merge(r,{broadcast:2}))},"@VERSION@",{requires:["event-custom"]});
diff --git a/lib/yui/build/moodle-core-event/moodle-core-event.js b/lib/yui/build/moodle-core-event/moodle-core-event.js
index d2c481f2c0e..2a9e77668ce 100644
--- a/lib/yui/build/moodle-core-event/moodle-core-event.js
+++ b/lib/yui/build/moodle-core-event/moodle-core-event.js
@@ -44,6 +44,17 @@ M.core.event = {
     FILTER_CONTENT_UPDATED: "filter-content-updated"
 };
 
+M.core.globalEvents = {
+    /**
+     * This event is triggered when form has an error
+     *
+     * @event "form_error"
+     * @param formid {string} Id of form with error.
+     * @param elementid {string} Id of element with error.
+     */
+    FORM_ERROR: "form_error"
+};
+
 
 var eventDefaultConfig = {
     emitFacade: true,
@@ -55,6 +66,8 @@ var eventDefaultConfig = {
     }
 };
 
+// Publish events with a custom config here.
+
 // Publish all the events with a standard config.
 var key;
 for (key in M.core.event) {
@@ -63,7 +76,12 @@ for (key in M.core.event) {
     }
 }
 
-// Publish events with a custom config here.
+//Publish all the global events.
+for (key in M.core.globalEvents) {
+    if (M.core.globalEvents.hasOwnProperty(key)) {
+        Y.Global.publish(M.core.globalEvents[key], Y.merge(eventDefaultConfig, {broadcast: 2}));
+    }
+}
 
 
 }, '@VERSION@', {"requires": ["event-custom"]});
diff --git a/lib/yui/src/event/js/event.js b/lib/yui/src/event/js/event.js
index 39fe4f6c862..6f6a28adb9d 100644
--- a/lib/yui/src/event/js/event.js
+++ b/lib/yui/src/event/js/event.js
@@ -42,6 +42,17 @@ M.core.event = {
     FILTER_CONTENT_UPDATED: "filter-content-updated"
 };
 
+M.core.globalEvents = {
+    /**
+     * This event is triggered when form has an error
+     *
+     * @event "form_error"
+     * @param formid {string} Id of form with error.
+     * @param elementid {string} Id of element with error.
+     */
+    FORM_ERROR: "form_error"
+};
+
 
 var eventDefaultConfig = {
     emitFacade: true,
@@ -56,6 +67,8 @@ var eventDefaultConfig = {
     }
 };
 
+// Publish events with a custom config here.
+
 // Publish all the events with a standard config.
 var key;
 for (key in M.core.event) {
@@ -64,4 +77,9 @@ for (key in M.core.event) {
     }
 }
 
-// Publish events with a custom config here.
+//Publish all the global events.
+for (key in M.core.globalEvents) {
+    if (M.core.globalEvents.hasOwnProperty(key)) {
+        Y.Global.publish(M.core.globalEvents[key], Y.merge(eventDefaultConfig, {broadcast: 2}));
+    }
+}