[tex-live] Error loading TeXlive manager 2017

[Alessandro Cuttin]

hi there,

I just installed on a brand new machine the TeXlive 2017 using Enrico
Gregorio's guide
<http://profs.scienze.univr.it/~gregorio/texlive-YEAR-ubuntu.pdf>

Everything is fine except for the fact that when I launch the tlmgr I get
the following error:

afcuttin at millenium-falcon:~/idic-comml$ sutlmgr
Loading local TeX Live database
(/usr/local/texlive/2017/tlpkg/texlive.tlpdb)
This may take some time, please be patient ...
bad pad value "2m": must be positive screen distance at
/usr/lib/x86_64-linux-gnu/perl5/5.22/Tk/Widget.pm line 1218.
at /usr/local/texlive/2017/texmf-dist/scripts/texlive/tlmgrgui.pl line 295.
Compilation failed in require at /opt/texbin/tlmgr line 4724.

the command sutlmg is just an alias for sudo /opt/texbin/tlmgr -gui as per
the installation guide.

Unfortunately it seems that Google is not my friend at finding a solution
to this error.

(BTW, this is also a question on TeX.stackexchange:
https://tex.stackexchange.com/q/384565/177)

thanks,
-Alessandro Cuttin
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