Index: mucs.c
===================================================================
--- mucs.c	(revision 26786)
+++ mucs.c	(revision 26787)
@@ -73,7 +73,7 @@
 	}
 
 	if (!fname || !*fname) {
-		fname = pcb_gui->fileselect("Load mucs routing session Resource File...",
+		fname = pcb_gui->fileselect(pcb_gui, "Load mucs routing session Resource File...",
 																"Picks a mucs session resource file to load.\n"
 																	"This file could be generated by mucs-pcb\n",
 																default_file, ".l1", NULL, "unixplot", PCB_HID_FSD_READ, NULL);