--- ray/src/common/instance.c	1989/02/02 10:34:35	1.1
+++ ray/src/common/instance.c	1989/10/13 19:45:50	1.5
@@ -28,7 +28,7 @@ int  flags;
 	char  *pathname;
 	register SCENE  *sc;
 
-	flags &= ~IO_FILES;			/* not allowed */
+	flags &= ~(IO_FILES|IO_INFO);		/* not allowed */
 	for (sc = slist; sc != NULL; sc = sc->next)
 		if (!strcmp(sname, sc->name)) {
 			if ((sc->ldflags & flags) == flags)
@@ -44,7 +44,7 @@ int  flags;
 		sc->next = slist;
 		slist = sc;
 	}
-	if ((pathname = getpath(sname, libpath)) == NULL) {
+	if ((pathname = getpath(sname, libpath, R_OK)) == NULL) {
 		sprintf(errmsg, "cannot find octree file \"%s\"", sname);
 		error(USER, errmsg);
 	}
@@ -66,20 +66,16 @@ int  flags;
 			error(SYSTEM, "out of memory in getinstance");
 		if (o->oargs.nsargs < 1)
 			objerror(o, USER, "bad # of arguments");
-		in->f.sca = 1.0;
-		setident4(in->f.xfm);
 		if (xf(in->f.xfm, &in->f.sca, o->oargs.nsargs-1,
 				o->oargs.sarg+1) != o->oargs.nsargs-1)
 			objerror(o, USER, "bad transform");
 		if (in->f.sca < 0.0)
 			in->f.sca = -in->f.sca;
-		in->b.sca = 1.0;
-		setident4(in->b.xfm);
 		invxf(in->b.xfm, &in->b.sca,o->oargs.nsargs-1,o->oargs.sarg+1);
 		if (in->b.sca < 0.0)
 			in->b.sca = -in->b.sca;
 		in->obj = NULL;
-		(INSTANCE *)o->os = in;
+		o->os = (char *)in;
 	}
 	if (in->obj == NULL || (in->obj->ldflags & flags) != flags)
 		in->obj = getscene(o->oargs.sarg[0], flags);