I just updated to 10.4 and seem to be having some issues with Coordinate systems. Specifically a county coordinate in Wisconsin. In 10.3.1, all of my layers show up in the same place, in 10.4 my county coords will not work and my shapefile and imagery displays in different parts of the open document. I uninstalled 10.4 and in reinstalled 10.3.1 and everything works perfect again. Anyone else having any odd issues with 10.4?