Index: src/buffer.c
===================================================================
--- src/buffer.c	(revision 8910)
+++ src/buffer.c	(revision 8911)
@@ -222,7 +222,8 @@
 
 	/* release unused memory */
 	pcb_board_remove(newPCB);
-	Buffer->Data->pcb = pcb;
+	if (Buffer->Data != NULL)
+		Buffer->Data->pcb = pcb;
 	pcb_event(PCB_EVENT_LAYERS_CHANGED, NULL); /* undo the events generated on load */
 	return (pcb_false);
 }