Index: /mods/wpsg_mod_core.class.php
===================================================================
--- /mods/wpsg_mod_core.class.php	(revision 6191)
+++ /mods/wpsg_mod_core.class.php	(revision 6192)
@@ -77,4 +77,6 @@
 				foreach ($pluginModule as $class_name => $mod)
 				{
+					
+					if (!is_object($mod)) continue;
 					
 					if ($this->shop->get_option($class_name, $global) > 0)