powerpoint Black frames appear

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Previous Thread: Why do bullets print incorrectly?

9/29/2005 1:28:05 AM Black frames appear

Hi  
  
I have used some png-images with transparency in a ppt presentation and  
  
I got a black frame around the images when showing them with a beamer.  
  
Does someone know why or how to avoid the problem?  
  
Thanks.  
  
--  
  
Nystanet  
  
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