Preparing to unpack .../libmpl1_3.1-5_i386.deb ... Unpacking libmpl1:i386 (3.1-5) ... Selecting previously unselected package libmpich12:i386. Preparing to unpack .../libmpich12_3.1-5_i386.deb ... Unpacking libmpich12:i386 (3.1-5) ... Selecting previously unselected package libopa1:i386. Preparing to unpack .../libopa1_3.1-5_i386.deb ... Unpacking libopa1:i386 (3.1-5) ... Preparing to unpack .../firefox_41.0.2+build2-0ubuntu0.15.04.1_i386.deb ... Unpacking firefox (41.0.2+build2-0ubuntu0.15.04.1) over (41.0.1+build2-0ubuntu0.15.04.2) ... Preparing to unpack .../flashplugin-installer_11.2.202.540ubuntu0.15.04.2_i386.deb ... Unpacking flashplugin-installer (11.2.202.540ubuntu0.15.04.2) over (11.2.202.535ubuntu0.15.04.1) ... Selecting previously unselected package libcr-dev. Preparing to unpack .../libcr-dev_0.8.5-2.1_i386.deb ... Unpacking libcr-dev (0.8.5-2.1) ... Selecting previously unselected package hwloc-nox. Preparing to unpack .../hwloc-nox_1.10.0-3_i386.deb ... Unpacking hwloc-nox (1.10.0-3) ... Selecting previously unselected package libmpl-dev. Preparing to unpack .../libmpl-dev_3.1-5_i386.deb ... Unpacking libmpl-dev (3.1-5) ... Selecting previously unselected package libopa-dev. Preparing to unpack .../libopa-dev_3.1-5_i386.deb ... Unpacking libopa-dev (3.1-5) ... Selecting previously unselected package libmpich-dev. Preparing to unpack .../libmpich-dev_3.1-5_i386.deb ... Unpacking libmpich-dev (3.1-5) ... dpkg: error processing archive /var/cache/apt/archives/libmpich-dev_3.1-5_i386.deb (--unpack): trying to overwrite '/usr/bin/mpichversion', which is also in package mpich 3.1-1ubuntu