[R-sig-Debian] R Commander does not work on Ubuntu 18.04

[Juliano Mota]

Hello my friends! I'm encountering problems using the R Commander package.
In the "statistics" menu the "average" commands, tests for the mean, are
inactive all the time, even when I already have a dataset. I use Ubuntu
18.04, everything is up to date and my machine is an i7 with 8GB of RAM. I
installed ALL R packages available on the servers.

What am I doing wrong?

-- 
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Juliano Fabiano da Mota
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