Index: build_run.c
===================================================================
--- build_run.c	(revision 15199)
+++ build_run.c	(revision 15200)
@@ -325,6 +325,7 @@
 		cat->type = PCB_FLT_CATEGORY;
 		cat->name = pcb_strdup(name);
 		htsp_init(&cat->data.category.children, strhash, strkeyeq);
+		htsp_set(&pcb_file_loaded, cat->name, cat);
 	}
 	return cat;
 }