TreeSize: Get sizes of a directory and its sub-directories

[Little John]

None of those sizes require 64-bit calculations and have anything to do with a 64-bit system, though. They could be a group of files anywhere.

No. Of course the problem has to do with the way how 64-bit Windows handles 32-bit programs.
But this is beyond the scope of this topic.

[AZJIO]

I'll keep trying to find another way.

There is no other way, any x32 program on an x64 operating system without disabling redirection will use SysWOW64 when specifying the System32 directory.