Can not remove or install programs. Crashes on Ice Tea

I have installed and used Wakfu Game on my Ubuntu 14.04 LTS system. Recently an update was installed either in game or in Ubuntu which corrupted the operation of the program with issues with Java.
A little knowledge is dangerous and I tried to install Ice Tea thining perhaps that version would work. Well instead it crashed on install and now I can not install anything or remove anything.

Here is the terminal printout from doing a sudo apt-get -f install

Get:1 http://us.archive.ubuntu.com/ubuntu/ trusty/main icedtea-netx amd64 1.5-1ubuntu1 [19.6 kB]
Fetched 19.6 kB in 0s (80.2 kB/s)
debconf: unable to initialize frontend: Dialog
debconf: (Dialog frontend requires a screen at least 13 lines tall and 31 columns wide.)
debconf: falling back to frontend: Readline
(Reading database ... 501991 files and directories currently installed.)
Preparing to unpack .../icedtea-netx_1.5-1ubuntu1_amd64.deb ...
Unpacking icedtea-netx:amd64 (1.5-1ubuntu1) ...
dpkg: error processing archive /var/cache/apt/archives/icedtea-netx_1.5-1ubuntu1_amd64.deb (--unpack):
 trying to overwrite shared '/usr/bin/policyeditor', which is different from other instances of package icedtea-netx:amd64
Processing triggers for man-db (2.6.7.1-1ubuntu1) ...
Errors were encountered while processing:
 /var/cache/apt/archives/icedtea-netx_1.5-1ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

What do I need to do to clear this and fix the problem? Incidently any help getting Wakfu to run would be appreciated also as it says that Wakfu did not exit correctly.

Thanks