Error nr 5

after downloaded pdfcreater 1.7.1 and removed the old version,  the new pdf creater won't work and error dialogue was showed as follow. 
my window version is win8.
Thanks for your help.

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PDFCreator - www.pdfforge.org
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Errorprotocol
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PDFCreator 1.7.1 - Error message
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ERROR DESCRIPTION:
          Error-Nr: 5 (Invalid procedure call or argument)
          Modul: modMain
          Procedure: LoadGhostscriptDLL
          Line:     50590
          Date/Time: 2013-11-05 / 17:52:31
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CALLSTACK:
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SYSTEMINFO:
 Windows 8
  [6.2 Build 9200]
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Hi,


please try uninstalling the PDFCreator, rebooting your computer and reinstalling it again afterwards.


regards,

Robin