Hi guys, the build system has been modified to work with Ubuntu 12.04 properly again, as well as Windows.

Just update counterpartyd_build to the newest version via get. Updated instructions are at: http://counterpartyd-build.readthedocs.org/en/latest/BuildingFromSource.html
(for Linux, you'll just need to update from git and rerun).

Please report any technical issues with it to dev@counterparty.co, or our Skype chat channels.