--- wrlib/png.c.old	2011-09-16 22:19:45.000000000 -0400
+++ wrlib/png.c	2011-09-16 22:21:57.000000000 -0400
@@ -79,7 +79,7 @@
     }
 
     RErrorCode = RERR_INTERNAL;
-    if (setjmp(png->jmpbuf)) {
+    if (setjmp(png_jmpbuf(png))) {
         fclose(f);
         png_destroy_read_struct(&png, &pinfo, &einfo);
         if (image)