Just an FYI, the realm of Roaming Profiles is not supported by Autodesk due to the differences of setup for each network at each of site.
For sites that have mastered this setup for Autodesk Civil 3D 2015, please note the following solutions:
One of the programs that is part of Autodesk Civil 3D is a completely separate application but it is a part of the install as a subcomponent is Storm & Sanitary Analysis. Please check out this article:
Thanks to Dave Meyer for sharing this tip with the community.