[R] Fwd: Rgraphviz installation problem

[gerostathos]

Dear Martin
thanks for your comprehensive instructions, had I found them earlier I would
have saved at least 3 hours of problems...
Everyone copies: "your Windows system 'PATH' variable needs to be adjusted
once you've 
installed graphviz and before installing Rgraphviz "
What if Rgraphviz is already installed? Trying every step proposed does not
seem to work any more (I get "character (0)" when I try your check in R).
How can I remove Rgraphviz from R in order to start everything again? Or are
there other solutions to that?

Thanks in advance

Anton Gerostathos

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