simon@simon-Aspire-5542:~$ sudo dpkg -i gimx.deb
[sudo] password for simon:
Selecting previously unselected package gimx.
(Reading database ... 172636 files and directories currently installed.)
Preparing to unpack gimx.deb ...
Unpacking gimx (6.4-1) ...
dpkg: dependency problems prevent configuration of gimx:
 gimx depends on libwxbase3.0-0v5 (>= 3.0.2+dfsg); however:
  Package libwxbase3.0-0v5 is not installed.
 gimx depends on libwxgtk3.0-0v5 (>= 3.0.2+dfsg); however:
  Package libwxgtk3.0-0v5 is not installed.
 gimx depends on gksu; however:
  Package gksu is not installed.

dpkg: error processing package gimx (--install):
 dependency problems - leaving unconfigured
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160701-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Errors were encountered while processing:
 gimx
simon@simon-Aspire-5542:~$ sudo apt-get update && sudo apt-get upgrade
Hit:1 http://au.archive.ubuntu.com/ubuntu xenial InRelease
Get:2 http://au.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 kB]
Hit:3 http://security.ubuntu.com/ubuntu xenial-security InRelease
Get:4 http://au.archive.ubuntu.com/ubuntu xenial-backports InRelease [102 kB]
Get:5 http://au.archive.ubuntu.com/ubuntu xenial/main Translation-en_AU [420 kB]
Get:6 http://au.archive.ubuntu.com/ubuntu xenial/restricted Translation-en_AU [2,012 B]
Get:7 http://au.archive.ubuntu.com/ubuntu xenial/universe Translation-en_AU [3,039 kB]
Get:8 http://au.archive.ubuntu.com/ubuntu xenial/multiverse Translation-en_AU [67.7 kB]
Get:9 http://au.archive.ubuntu.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata [306 kB]
Get:10 http://au.archive.ubuntu.com/ubuntu xenial-updates/main DEP-11 64x64 Icons [189 kB]
Get:11 http://au.archive.ubuntu.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [133 kB]
Get:12 http://au.archive.ubuntu.com/ubuntu xenial-updates/universe DEP-11 64x64 Icons [162 kB]
Get:13 http://au.archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 DEP-11 Metadata [2,516 B]
Get:14 http://au.archive.ubuntu.com/ubuntu xenial-backports/main amd64 DEP-11 Metadata [3,324 B]
Fetched 4,529 kB in 10s (446 kB/s)
AppStream cache update completed, but some metadata was ignored due to errors.
Reading package lists... Done
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
 gimx : Depends: libwxbase3.0-0v5 (>= 3.0.2+dfsg) but it is not installed
        Depends: libwxgtk3.0-0v5 (>= 3.0.2+dfsg) but it is not installed
        Depends: gksu but it is not installed
E: Unmet dependencies. Try using -f.
simon@simon-Aspire-5542:~$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following additional packages will be installed:
  gksu libgksu2-0 libwxbase3.0-0v5 libwxgtk3.0-0v5
The following NEW packages will be installed:
  gksu libgksu2-0 libwxbase3.0-0v5 libwxgtk3.0-0v5
0 to upgrade, 4 to newly install, 0 to remove and 332 not to upgrade.
1 not fully installed or removed.
Need to get 5,436 kB of archives.
After this operation, 21.9 MB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://au.archive.ubuntu.com/ubuntu xenial/universe amd64 libwxbase3.0-0v5 amd64 3.0.2+dfsg-1.3 [971 kB]
Get:2 http://au.archive.ubuntu.com/ubuntu xenial/universe amd64 libwxgtk3.0-0v5 amd64 3.0.2+dfsg-1.3 [4,342 kB]
Get:3 http://au.archive.ubuntu.com/ubuntu xenial/universe amd64 libgksu2-0 amd64 2.0.13~pre1-6ubuntu8 [71.8 kB]
Get:4 http://au.archive.ubuntu.com/ubuntu xenial/universe amd64 gksu amd64 2.0.2-9ubuntu1 [51.5 kB]
Fetched 5,436 kB in 15s (356 kB/s)
Selecting previously unselected package libwxbase3.0-0v5:amd64.
(Reading database ... 172667 files and directories currently installed.)
Preparing to unpack .../libwxbase3.0-0v5_3.0.2+dfsg-1.3_amd64.deb ...
Unpacking libwxbase3.0-0v5:amd64 (3.0.2+dfsg-1.3) ...
Selecting previously unselected package libwxgtk3.0-0v5:amd64.
Preparing to unpack .../libwxgtk3.0-0v5_3.0.2+dfsg-1.3_amd64.deb ...
Unpacking libwxgtk3.0-0v5:amd64 (3.0.2+dfsg-1.3) ...
Selecting previously unselected package libgksu2-0.
Preparing to unpack .../libgksu2-0_2.0.13~pre1-6ubuntu8_amd64.deb ...
Unpacking libgksu2-0 (2.0.13~pre1-6ubuntu8) ...
Selecting previously unselected package gksu.
Preparing to unpack .../gksu_2.0.2-9ubuntu1_amd64.deb ...
Unpacking gksu (2.0.2-9ubuntu1) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
Processing triggers for gconf2 (3.2.6-3ubuntu6) ...
Processing triggers for man-db (2.7.5-1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160701-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...
Setting up libwxbase3.0-0v5:amd64 (3.0.2+dfsg-1.3) ...
Setting up libwxgtk3.0-0v5:amd64 (3.0.2+dfsg-1.3) ...
Setting up libgksu2-0 (2.0.13~pre1-6ubuntu8) ...
update-alternatives: using /usr/share/libgksu/debian/gconf-defaults.libgksu-sudo to provide /usr/share/gconf/defaults/10_libgksu (libgksu-gconf-defaults) in auto mode
Processing triggers for gconf2 (3.2.6-3ubuntu6) ...
Setting up gksu (2.0.2-9ubuntu1) ...
Setting up gimx (6.4-1) ...
Processing triggers for libc-bin (2.23-0ubuntu3) ...
simon@simon-Aspire-5542:~$