[Bug 1047913] Re: muon returns error because cannot display license windows

[lokster]

I have the same problem, and after some investigation here is what I've found:
 - first, I ran "sudo dpkg-reconfigure debconf" and selected KDE as frontend.
 - then I ran the same command again, and saw this message:
"debconf: (Unable to load QtCore -- is libqtcore4-perl installed?)"
After some digging, I found the missing packages: libqtcore4-perl, libqtgui4-perl, libqt3support4-perl
Installed them, and this completely broke the updater... Now I get this error when I try to dpkg-reconfigure some package:

Can't call method "setText" on an undefined value at
/usr/share/perl5/Debconf/FrontEnd/Kde/Ui_DebconfWizard.pm line 144,
<GEN1> line 7.

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https://bugs.launchpad.net/bugs/1047913

Title:
  muon returns error because cannot display license windows

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