FumeFX.ini
By default, the FumeFX.ini file is located inside the FumeFX plugin folder.
However, user can specify any other location by defining an environment variable named FUMEFX_INI
Depending on the Users permissions, the Windows’ UAC might now allow a user to write to FumeFX.ini file. In this case write permissions for FumeFX.ini should be adjusted as shown on the image below.