Index: eagle_bin/test_parser/eagle_bin.c
===================================================================
--- eagle_bin/test_parser/eagle_bin.c	(revision 9404)
+++ eagle_bin/test_parser/eagle_bin.c	(revision 9405)
@@ -1077,7 +1077,7 @@
 			goto found;
 	}
 
-	printf("E: unknown block ID 0x%x\n", block[0]);
+	printf("E: unknown block ID 0x%x at offset %ld\n", block[0], ftell(f));
 	return -1;
 
 	found:;