8.0 Beta doesn't have it's own registry key.

[Balderstrom]

When TC 7.56a is installed in C:\Program Files (x86)\TotalCMD
Installing 64bit beta, the installer recommends:
C:\Program Files (x86)\TotalCMD as the install location.

Installer should recommend:
C:\Program Files\TotalCMD

Beta should have its own registry key, minimally, the 64bit version should have it's own registry key so that you can separate the INI files/plugins etc.

Specifying a custom location for the 64bit beta changes the location 7.56a looks for it's config files.

[ghisler(Author)]

TC suggests the same path for the case that people share things like plugins or settings in the program directory.

[MVV]

Balderstrom, BTW 64-bit programs have their own SOFTWARE key, 32-bit ones use redirected key SOFTWARE\Wow6432Node.