diff -ur plt-4.2.2.orig/src/wxcommon/wxJPEG.cxx plt-4.2.2/src/wxcommon/wxJPEG.cxx
--- plt-4.2.2.orig/src/wxcommon/wxJPEG.cxx	2009-09-17 06:08:52.000000000 +0300
+++ plt-4.2.2/src/wxcommon/wxJPEG.cxx	2011-10-31 00:16:29.598465746 +0200
@@ -521,7 +521,7 @@
   png_err_msg = new WXGC_ATOMIC char[len + 1];
   memcpy(png_err_msg, msg, len + 1);
   
-  longjmp(png_ptr->jmpbuf, 1);
+  longjmp(png_jmpbuf(png_ptr), 1);
 }
 
 static void user_warn_proc(png_structp info, png_const_charp msg)
@@ -676,7 +676,7 @@
    png_ptr_orig = png_ptr;
    info_ptr_orig = info_ptr;
 
-   if (setjmp(png_ptr->jmpbuf))
+   if (setjmp(png_jmpbuf(png_ptr)))
    {
      /* Free all of the memory associated with the png_ptr and info_ptr */
      png_ptr = png_ptr_orig;
@@ -964,7 +964,7 @@
 
    png_ptr_orig = png_ptr;
    info_ptr_orig = info_ptr;
-   if (setjmp(png_ptr->jmpbuf)) {
+   if (setjmp(png_jmpbuf(png_ptr))) {
      /* Free all of the memory associated with the png_ptr and info_ptr */
      png_ptr = png_ptr_orig;
      info_ptr = info_ptr_orig;