How do I install Bitcoin Armory in Ubuntu 17.04?
The latest Armory version is from this year, 0.96. If that is not the version you are installing, then you are using an old and outdated version. The most recent version can be found at https://btcarmory.com/0.96.0-release/. Download the one labeled "Armory 0.96.0 for Ubuntu/Debian 64-bit with GCC 5.3". To install it, you can open the terminal, cd to the directory containing the downloaded deb file, and type

sudo dpkg -i armory_0.96-gcc5.4_amd64.deb


You will also need to install Bitcoin Core, which you can get from https://bitcoin.org/en/download.