Welcome to everyone on the project wiki!
The last release is provided with a setup program for easily installing/uninstalling this addin.
Before installing the new release every old version have to be removed manually by deleting its folder (may be located there "C:\ProgramData\Autodesk\Inventor 2015\Addins").
Tested on a computer with Windows 7 & 8.1 64Bit as operating systems.