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I failed to install qt4-designer under ubuntu 12.10 because I got this error message:

qt4-designer:
  Depends: libqt4-designer (=4:4.8.3+dfsg-0ubuntu3.1) but 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 is to be installed
  Depends: libqt4-network (=4:4.8.3+dfsg-0ubuntu3.1) but 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 is to be installed
  Depends: libqt4-xml (=4:4.8.3+dfsg-0ubuntu3.1) but 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 is to be installed
  Depends: libqtcore4 (=4:4.8.3+dfsg-0ubuntu3.1) but 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 is to be installed
  Depends: libqtgui4 (=4:4.8.3+dfsg-0ubuntu3.1) but 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 is to be installed

How can I fix this issue?

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marked as duplicate by Thomas Ward, Seth, Raja, Eric Carvalho, Caesium Apr 4 '13 at 18:20

This question was marked as an exact duplicate of an existing question.

Looks like you have you added some Qt related PPA's, and have installed newer Qt libraries which lead to dependency conflict.

The easiest way would be to uninstall 4:4.8.3+dfsg-0ubuntu4~quantal1~test4 Qt packages, remove 3rd party Qt PPA's, and try again.

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