Magento is throwing the following error in console when we load the CMS->Widget page there is also an error which I think is related, but what I haven't been able to solve.
Uncaught SyntaxError: Unexpected identifier
'<select name="widget_instance[{{id}}][page_group]" id="widget_instance[{{id}}][page_group]" class="required-entry page_group_select select" title="" onchange="WidgetInstance.displayPageGroup(this.value+\'_{{id}}\')"><option value="" >-- Maak een keuze --</option><optgroup label="Categorieen"><option value="anchor_categories" >Verankerde Categorieen</option><option value="notanchor_categories" >Niet verankerde categorieen</option></optgroup><optgroup label="Producten"><option value="all_products" >Alle product types</option><option value="simple_products" >Simpel Product</option><option value="grouped_products" >Gegroepeerd Product</option><option value="configurable_products" >Configureerbaar Product</option><option value="virtual_products" >Virtueel product</option><option value="bundle_products" >Bundelproduct</option><option value="downloadable_products" >Download-product</option></optgroup><optgroup label="Generieke pagina\\'s"><option value="all_pages" >Alles pagina\\'s</option><option value="pages" >Specifieke pagina</option></optgroup></select>'+
Clicking on 'add layout update' when adding a Magento Widget (Back-end CMS->Widgets)
Uncaught ReferenceError: WidgetInstance is not defined onclick @ (index):698
We haven't been using Widgets before, and this is an upgrade from Magento 1.7 to 1.9.2.1. I've searched the big G on it, found a single result which lead to no results. Any suggestions?
Attached screenshot for full first error:
