[tex-live] tlmgr gui is not working

[mario chiari]

Hello


any help you may offer on the following is very welcome.
(clearly, I am a newbie on  tlmgr)

[root at localhost ~]# tlmgr gui
Too late to run INIT block at /usr/share/perl5/XSLoader.pm line 94.
Too late to run INIT block at /usr/lib/perl5/DynaLoader.pm line 223.
perl: symbol lookup error: /usr/lib/perl5/auto/Tk/Tk.so: undefined
symbol: Perl_sv_utf8_upgrade_flags
[root at localhost ~]# 

thanks
mario