--- corona-1.0.2/src/OpenPNG.cpp~	2002-12-26 02:52:21.000000000 +0100
+++ corona-1.0.2/src/OpenPNG.cpp	2012-02-09 18:24:26.329842098 +0100
@@ -39,7 +39,7 @@
   void PNG_error_function(png_structp png_ptr, png_const_charp warning) {
     // copied from libpng's pngerror.cpp, but without the fprintf
     jmp_buf jmpbuf;
-    memcpy(jmpbuf, png_ptr->jmpbuf, sizeof(jmp_buf));
+    memcpy(jmpbuf, png_jmpbuf(png_ptr), sizeof(jmp_buf));
     longjmp(jmpbuf, 1);
   }
 
--- corona-1.0.2/src/SavePNG.cpp~	2003-07-17 01:09:48.000000000 +0200
+++ corona-1.0.2/src/SavePNG.cpp	2012-02-09 18:28:20.597717016 +0100
@@ -145,7 +145,6 @@
       pixels += width * color_format_bpp;      
     }
     png_set_rows(png_ptr, info_ptr, (png_bytepp)rows);
-    info_ptr->valid |= PNG_INFO_IDAT;
 
     // actually write the image
     png_write_png(png_ptr, info_ptr, PNG_TRANSFORM_IDENTITY, NULL);