[R] R console closes on its own

[Judith Flores]

Dear R-experts,

   I am running a script that has the following
structure:

windows(height=5.5,width=8)

dat<-read.csv("myfile.csv")
names(dat)<-c('a','b','c','d')
dat<-dat[,1:4]

xyplot(dat$a~dat$b)


   Then I usually save the plot as a PDF (from the
menu in the R console). I can save the PDF twice in a
row; but at the third time, right when I am about to
give a name to the graph, R crashes, no error
messages.

  I am using R 2.6.2, for Windows. I copy the script
from TinnR.

Thank you in adavance for any help,

Judith



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