Portable Apps on Windows PE 10 WADK

Hello,

I am creating emergency boot USB devices, with memory and HD.
Those devices have an emergency boot created by Macrium Reflect backup software.
Reflect uses the Windows PE 10 WADK to create the emergency boot, and it boots fine.

I have downloaded the portable apps platform into my Windows 10 Pro laptop and then copied all the associated files to the memories.
On the USB memory stick I have two partitions, and all the portable applications are there.

The apps run fine fine from the memory stick when run from Windows 10 Pro (normal) on the laptop.
But when I try to run the apps in the Emergency environment in the Exploring screen, I get this message:
Cannot open file. No associated program found.

If I try to run the portable apps (for example ClamWinPortable) from a command prompt, I get the message:
The image file:
i:\PortableApps\ClamWinPortable\ClamWinPortable.exe is valid,
but is for a machine type other than the current machine.

My goal is to create a utility USB stick that boots if Windows on the PC is corrupted, with several utilities available for analysis.
The main one of course to quickly backup the data on the drives if necessary. Then maybe virus scans and others.
I just started with Portable Apps and don't have any experience creating bootable USB drives, other than using Reflect to create one.

Why don't the portable apps work in the WADK environment? Is it missing significant Windows "stuff"?
Any suggestions?

Thanks