[MiKTeX] cannot find GhostScript

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I am using (AFPL) GS7.04 (GhostScript on Windows 2000)
I am using TexDraw to generate graphics in LaTEX documents
it worked all fine until today - now I am getting the message

PostScript problem:
cannot find GhostScript
Se the logbook for error history

When the document is viewed in YAP=20
=20
The error log is containing the text
Loading page 1...
Sending C:\texmf\dvips\base\tex.pro...
Error: PostScript problem:

cannot find GhostScript

What is changed

Joergen Soerensen