Index: export_openscad.c
===================================================================
--- export_openscad.c	(revision 24883)
+++ export_openscad.c	(revision 24884)
@@ -133,7 +133,7 @@
 	const char *suffix = ".scad";
 
 	if ((PCB != NULL)  && (openscad_attribute_list[HA_openscadfile].default_val.str_value == NULL))
-		pcb_derive_default_filename(PCB->Filename, &openscad_attribute_list[HA_openscadfile], suffix);
+		pcb_derive_default_filename(PCB->hidlib.filename, &openscad_attribute_list[HA_openscadfile], suffix);
 
 	if (n)
 		*n = NUM_OPTIONS;