Index: svg.c
===================================================================
--- svg.c	(revision 29222)
+++ svg.c	(revision 29223)
@@ -366,7 +366,7 @@
 
 	if (pcb_cam_end(&svg_cam) == 0)
 		if (!svg_cam.okempty)
-			pcb_message(PCB_MSG_ERROR, "svg cam export for '%s' failed to produce any content\n", options[HA_cam].str);
+			pcb_message(PCB_MSG_ERROR, "svg cam export for '%s' failed to produce any content (layer group missing)\n", options[HA_cam].str);
 }
 
 static int svg_parse_arguments(pcb_hid_t *hid, int *argc, char ***argv)