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(Reading database ... 472501 files and directories currently installed.)
Preparing to unpack .../gimp_2.9.5~89-0x0~ppa~86e101e_amd64.deb ...
Unpacking gimp (2.9.5~89-0x0~ppa~86e101e) over (2.9.5~11-0x0~ppa~c29098e) ...
dpkg: error processing archive /var/cache/apt/archives/gimp_2.9.5~89-0x0~ppa~86e101e_amd64.deb (--unpack):
 trying to overwrite '/usr/lib/gimp/2.0/plug-ins/wavelet-decompose', which is also in package gimp-plugin-registry 7.20140602ubuntu2
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for mime-support (3.59ubuntu1) ...
Errors were encountered while processing:
 /var/cache/apt/archives/gimp_2.9.5~89-0x0~ppa~86e101e_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)