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V. 6.0: PNG export problems

  • To: mathgroup at
  • Subject: [mg109898] V. 6.0: PNG export problems
  • From: Ulf-Dietrich Braumann <braumann at>
  • Date: Sat, 22 May 2010 00:40:17 -0400 (EDT)
  • Reply-to: braumann at

Dear Colleagues,

is there still someone who remembers some PNG export problems under 
version 6.0 run on Windows systems? The following example does not write a 
file, even though the message suggests some action (export as TIFF works, 

In[1]:= Export["c:/test.png", Import["ExampleData/spikey2.png"]]
Out[1]= "c:/test.png"

Reading the message but finding no file is rather unusual using 
Mathematica. Looking whether the exporter PNG.exe was launched gives no 
suspicious feedback:

In[2]:= Select[Links[], StringMatchQ[First[#], "*PNG.exe*"] &]
Out[2]= {LinkObject[
   "\"D:\\Program Files (x86)\\Wolfram \
Windows-x86-64\\PNG.exe\"", 5, 5]}

Interestingly, on another v 6.0 installation under Windows this PNG export 
works fine!

Thanks for any hints - Ulf-Dietrich Braumann

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