gopass: The Windows 32-bit and 64-bit binary don't seem to work out of the box

Steps to reproduce:

1. Download the 64-bit, located here.
2. Extract it to some directory.
3. Add that directory to the PATH variable with the instructions located here.
4. Open a new command window via Start --> Run --> cmd
5. Do a go init command.

Microsoft Windows [Version 10.0.14393]
(c) 2016 Microsoft Corporation. All rights reserved.

C:\Users\Zamiell>gopass

Error: password-store is not initialized. Try 'gopass init'

C:\Users\Zamiell>gopass init

Error: exec: "": executable file not found in %PATH%

C:\Users\Zamiell>

These steps were performed on a Windows 10 OS. I also tried using the 32-bit binary, and I received the same error. Any tips?