I've set up my water network layers to create an EPANET model using the gHydraulics plugin for QGIS 2.8: pipes, junctions, and a reservoir. The pipes have unique IDs, with their corresponding junctions' IDs as Node 1 and Node 2. When trying to make the EPANET model, however, I get a Python error:
TypeError: qgis._core.QgsMapLayerRegistry cannot be instantiated or sub-classed
This does not happen with QGIS 2.0.