No, the installer did not show that location. It put everything there, but clearly went into the same location as my Soundtoys plugins did (program files x86/Steinberg) and was supposed to create the Eventide subdirectory there, but never did. I did not change anything, mind you. That was what the installer defaulted to.
Sorry, I'm not sure I totally follow. What is the file location that the installer defaults to showing when you run it? And if you leave it as default, it installs into C:Program Files (x86)Steinberg? What version of Windows are you running? Are you using the latest AX installer (1.0.6)?