This GUI was designed to provide a fast and flexible interface for acquiring and visualizing data from extracellular electrodes.
We switched to a true plugin architecture in which individual processors are compiled independently. The new version is found here: https://github.com/open-ephys/plugin-GUI
If you are working on code using the non-plugin version, please see https://open-ephys.atlassian.net/wiki/display/OEW/Plugin+architecture for how to adapt your code to the plugin architecture.