This problem happen because of the use of libarchive plugin. The use of libarchive plugin is required because of this kind of problem : https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=723963 https://bugs.kde.org/show_bug.cgi?id=319712
But that cause some other problems like this one and these others one : https://bugs.kde.org/show_bug.cgi?id=348944 https://bugs.launchpad.net/ubuntu/+source/ark/+bug/1404239 https://bugs.kde.org/show_bug.cgi?id=35371 I think that we should avoid the use of libarchive plugin with Ark and for this to happen Ark have to be fixed ( https://bugs.kde.org/show_bug.cgi?id=319712).
