Preparing to unpack .../libsdl1.2debian_1.2.15+dfsg1-3_amd64.deb ...
Unpacking libsdl1.2debian:amd64 (1.2.15+dfsg1-3) ...
Selecting previously unselected package libsdl-image1.2:amd64.
Preparing to unpack .../libsdl-image1.2_1.2.12-5build2_amd64.deb ...
Unpacking libsdl-image1.2:amd64 (1.2.12-5build2) ...
Processing triggers for libc-bin (2.23-0ubuntu5) ...
Setting up libsdl1.2debian:amd64 (1.2.15+dfsg1-3) ...
Setting up libsdl-image1.2:amd64 (1.2.12-5build2) ...
dpkg: error processing package libproxy-tools (--configure):
 package libproxy-tools is already installed and configured