Thanks, Mark, for the response.
The problem is vith SciViews. It is not stable under the latest version of R.
I found a solution by downloading the latest version of Tinn-R, which communicates with the latest version of R, and now I can carry on like normal (with both windows tiled horizontally).
 
Jacob
 
 
Jacob L van Wyk
Department of Statistics
University of Johannesburg, APK
Box 524
Auckland Park 2006
South Africa
Office Tel: +27 11 559 3080
Fax: +27 11 559 2832
 

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