Index: trunk/private/themesite.class.php
===================================================================
--- trunk/private/themesite.class.php	(Revision 24698)
+++ trunk/private/themesite.class.php	(Arbeitskopie)
@@ -704,9 +704,12 @@
                         if($setting['type'] == "file")
                         {
                             $value_info = $this->my_pathinfo($value);
-                            /* fonts from the fontpack dont need to exist */
+                            /* fonts from the fontpack dont need to exist
+                             * also accept '-' filenames used to explicitely
+                             * deactivate loading a file */
                             $fname = preg_replace("/\.fnt\s*$/","",$value_info['filename']);
-                            if (preg_match("/\.fnt\s*$/", $value) && $this->isfontpackfont($fname)) {
+                            if (preg_match("/\.fnt\s*$/", $value) && $this->isfontpackfont($fname)
+                                || $value == '-') {
                                 $found = true;
                                 break;
                             }