--- a/newgrf.c	Sun Jan 07 12:07:07 2007 +0000
+++ b/newgrf.c	Sun Jan 07 12:11:54 2007 +0000
@@ -3793,8 +3793,11 @@
 
 			if (stage == GLS_LABELSCAN) InitNewGRFFile(c, _cur_spriteid);
 			LoadNewGRFFile(c, slot++, stage);
-			if (stage == GLS_ACTIVATION) ClearTemporaryNewGRFData();
-			DEBUG(spritecache, 2) ("Currently %i sprites are loaded", load_index);
+
+			if (stage == GLS_ACTIVATION) {
+				ClearTemporaryNewGRFData();
+				DEBUG(spritecache, 2) ("Currently %i sprites are loaded", _cur_spriteid);
+			}
 		}
 	}