Help me understand why this (DIY) plugin doesn't work

I spent several days on this with Win10XPE, no dice. I think I tried everything.

Then I used Win10PESE, and it's *working* the first time I built with everything in it.

Same exact ISO, where I enabled .NET3 on source, .NET 4, DirectX 11, 12, nothing special.

Saying there must be something fundamentally different with Win10XPE. Whether this is an issue with XPE, or with the program I don't know.
Just to let you know.

Was your testing on x86 or x64 ???
I believe it was OK on x86 .....

Test OCTv4 on x86 Basic Build w/ Directx & Full NetFx2-4 & VC++8.9 Runtime (although already default requirement in script)
I believe this should test with positive results...

Then swap to x64 Build and see if away of these files are Required (via Additions)

Yeah I know. I am always building x64 only. So both images were x64.

I am *guessing* that some component(s) could be missing on XPE, but I wouldn't know which one without doing even more crazy debugging. (Processmon etc.)
(I had built the older where it didn't work with anything I could think of, DirectX,  even directx runtime, all .NETs (verfified with the tool), SysWoW64, SxS etc.)

Also, for getting it to run on PESE I didn't need to copy additional files, I simply 7-zipped the program folder, no need for any custom files in Windows. (After all, that should all be there already)

the issue would appear to be missing SysWoW64 files on x64 Build...
Yes the base files are different between the 2 projects..
DirectX and DOTNET are more likely up to date on XPE...
edited post above with Host Syswow file list

I did a compare on Host vs PE wow64 files

unmark this line in script

Code: [Select]

//If,%Architecture%,Equal,x64,ExtractSectionFiles,%ScriptFile%,AddFiles6432

then replace the following

Code: [Select]

[AddFiles]
\Windows\apppatch\sysmain.sdb
\Windows\assembly

[AddFiles6432]
\Windows\SysWOW64\l_intl.nls
\Windows\SysWOW64\rasman.dll
\Windows\SysWOW64\security.dll

See if that helps
Success.......

Also, I would like to thank you for taking the time to test, I know it involved a lot of time, effort and persistence
In the long run it sometimes reaches the desired result...

OCCT v4.5.1.99 - XPE Plugin