diff -u -r a/plt-4.2.5/src/wxcommon/wxJPEG.cxx b/plt-4.2.5/src/wxcommon/wxJPEG.cxx
--- a/plt-4.2.5/src/wxcommon/wxJPEG.cxx	2010-03-17 20:22:03.000000000 +0200
+++ b/plt-4.2.5/src/wxcommon/wxJPEG.cxx	2010-05-11 18:16:06.000000000 +0300
@@ -726,7 +726,11 @@
        png_set_strip_16(png_ptr);
 
      /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
+     #if PNG_LIBPNG_VER < 10400
      png_set_gray_1_2_4_to_8(png_ptr);
+     #else
+     png_set_expand_gray_1_2_4_to_8(png_ptr);
+     #endif
    }
 
    /* Set the background color to draw transparent and alpha images over.