Can't install any new packages with apt-get

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http://askubuntu.com – From some time I've been getting error messages while installing some packages, for example: requires libmagickwand4 (= 8: ale 8: is about to be installed basically there are very small version differences (ubuntu3 vs ubuntu3.2), but I don't know how to fix them. Any help will be welcome :) (HowTos)