--- export.c
+++ export.c
@@ -496,7 +496,7 @@
 	png_ptr = png_create_write_struct( PNG_LIBPNG_VER_STRING, NULL, NULL, NULL );
     if ( png_ptr != NULL )
     	if( (info_ptr = png_create_info_struct(png_ptr)) != NULL )
-			if( setjmp(png_ptr->jmpbuf) )
+			if( setjmp(png_jmpbuf(png_ptr)) )
 			{
 				png_destroy_info_struct(png_ptr, (png_infopp) &info_ptr);
 				info_ptr = NULL ;
--- import.c
+++ import.c
@@ -1251,7 +1251,7 @@
 			 * the normal method of doing things with libpng).  REQUIRED unless you
 			 * set up your own error handlers in the png_create_read_struct() earlier.
 			 */
-			if ( !setjmp (png_ptr->jmpbuf))
+			if ( !setjmp (png_jmpbuf(png_ptr)))
 			{
 				ASFlagType rgb_flags = ASStorage_RLEDiffCompress|ASStorage_32Bit ;
 
@@ -1468,7 +1468,7 @@
 
 static void asim_png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   ASImPNGReadBuffer *buf = (ASImPNGReadBuffer *)png_ptr->io_ptr;
+   ASImPNGReadBuffer *buf = (ASImPNGReadBuffer *)png_get_io_ptr(png_ptr);
    memcpy(data, buf->buffer, length);
    buf->buffer += length;
 }