Thank you for your mail.
I have resolved this problem by the following procedure.
$ sage -f r
.......
Successfully installed r-3.1.1.p0
Deleting temporary build directory
Finished installing r-3.1.1.p0.spkg
Warning: it might be needed to update the Sage library before
installed packages work: you should run 'make' from $SAGE_ROOT
before running Sage.
$
$ cd $SAGE_ROOT
$ make
2014年10月12日日曜日 20時35分00秒 UTC+9 slelievre: