Your welcome.

Nirsoft programs are usually very good and efficient at what they do.

But....The user has to be careful about system requirements.

NirCmd System Requirements
System Requirements

This utility can work in all 32-bit Windows operating systems: Windows 9x/ME, Windows NT, Windows 2000, Windows XP, Windows Server 2003, and Windows Vista. However, some of NirCmd commands works only on Windows NT/2000/XP/2003/Vista.
Source: NirCmd - Windows command line tool

In a general sense, some programs can run in Windows 7 if Vista is listed, but I stay away from the ones that include OS's that I highlighted in red, and will take a chance on the ones that only list what I highlighted in green.

I apply this logic to any software developer, not just Nirsoft.

You will also find most if not all Nirsoft programs will be flagged by system anti-malware as harmful, not that they are.
It must be in the programing language he uses, and or the way he uses it as he tries to cover a broad scope of Windows Operating Systems.

Gibson likes to use assembly language that is pretty digestible by any Windows OS, so the Wizmo program may work better, but as in all things the user in today's world has to be vigilant.

Your Mileage May Vary....