Hello There,
 
Thanks you for your question. The problem maybe you changed the admin route (default is: http://yoursite.com/index.php/admin) Then the page builder get the 404 error link.
 
We fixed the issue. Please try to open the file “app/code/community/Ves/BlockBuilder/Helper/Data.php”, then find there functions:
 
public function getWidgetFormUrl($target_id = “”)
public function getListWidgetsUrl($target_id = “”)
 
Replace code of 2 functions to:
 
public function getWidgetFormUrl($target_id = “”) {
$params = array();
if($target_id) {
$params[‘widget_target_id’] = $target_id;
}
$admin_route = Mage::getConfig()->getNode(‘admin/routers/adminhtml/args/frontName’);
$admin_route = $admin_route?$admin_route:”admin”;
$url = Mage::getSingleton(‘adminhtml/url’)->getUrl(‘*/widget/loadOptions’, $params);
$url = str_replace(“/blockbuilder/”,”/{$admin_route}/”, $url);
return $url;
}
public function getListWidgetsUrl($target_id = “”) {
//return Mage::helper(“adminhtml”)->getUrl(“*/*/listwidgets”);
$params = array();
if($target_id) {
$params[‘widget_target_id’] = $target_id;
}
$admin_route = Mage::getConfig()->getNode(‘admin/routers/adminhtml/args/frontName’);
$admin_route = $admin_route?$admin_route:”admin”;

$url = Mage::getSingleton(‘adminhtml/url’)->getUrl(‘*/widget/index’, $params);
$url = str_replace(“/blockbuilder/”,”/{$admin_route}/”, $url);
return $url;
}
 
Also, we will update the module for our themes.