--- ray/src/px/panim.c	1990/11/07 13:10:30	1.7
+++ ray/src/px/panim.c	2003/02/22 02:07:27	2.2
@@ -1,9 +1,6 @@
-/* Copyright (c) 1988 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: panim.c,v 2.2 2003/02/22 02:07:27 greg Exp $";
 #endif
-
 /*
  *  Send pictures to PC animation system.
  *
@@ -103,6 +100,11 @@ char	*file;
 	}
 						/* get dimensions */
 	getheader(fp, NULL);
+	if (checkheader(fp, COLRFMT, NULL) < 0) {
+		fputs(file, stderr);
+		fputs(": not a Radiance picture\n", stderr);
+		exit(1);
+	}
 	if (fgetresolu(&xres, &yres, fp) != (YMAJOR|YDECR) ||
 			xres > SCANLINE || yres > NUMSCANS) {
 		fputs(file, stderr);