diff -r a931841e9df4 -r 12cc0502992a src/newgrf.cpp
--- a/src/newgrf.cpp	Wed Jun 13 02:29:08 2007 +0000
+++ b/src/newgrf.cpp	Wed Jun 13 06:42:43 2007 +0000
@@ -2101,6 +2101,7 @@
 
 	if (feature != _cur_grffile->spriteset_feature) {
 		grfmsg(1, "CreateGroupFromGroupID(0x%02X:0x%02X): Sprite set feature 0x%02X does not match action feature 0x%02X, skipping",
+				setid, type,
 				_cur_grffile->spriteset_feature, feature);
 		return NULL;
 	}