Luxury Pool Mansion HDRIs Day
So, I loaded the scene. There's 30 different Render DUFs that are part of the product. Each of them shows a different view of the HDRI. Most of them are unreachable if you try to move the camera around manually.
But loading those render DUFs does nothing. I can't see what they do at all. I load them and nothing happens. I have IRAY rendering in the viewport. The view doesn't change at all no matter which of them I merge into the scene. Nothing interesting in the log file that I can use as an action item:
2025-03-24 05:07:13.279 [INFO] :: Prepare asset load (merge): /Light Presets/Dreamlight/Iray/Luxury Pool Mansion HDRIs Day/Luxury Pool Mansion HDRIs Map 03 Shade.duf
2025-03-24 05:07:13.279 [INFO] :: Locking viewport redraw...
2025-03-24 05:07:13.279 [INFO] :: Viewport redraw locked.
2025-03-24 05:07:13.331 [VERBOSE] :: Native format content directories: 4
2025-03-24 05:07:13.331 [VERBOSE] :: Poser format content directories: 2
2025-03-24 05:07:13.331 [VERBOSE] :: Other import format content directories: 0
2025-03-24 05:07:13.331 [INFO] :: Begin asset load (merge): /Light Presets/Dreamlight/Iray/Luxury Pool Mansion HDRIs Day/Luxury Pool Mansion HDRIs Map 03 Shade.duf
2025-03-24 05:07:13.332 [INFO] :: Determining missing assets...
2025-03-24 05:07:13.335 [INFO] :: Setting textures...
2025-03-24 05:07:13.335 [INFO] :: Processing scene data...
2025-03-24 05:07:13.336 [INFO] :: Finalizing scene data...
2025-03-24 05:07:13.336 [INFO] :: Finished asset load (merge): 0m 0.4s - /Light Presets/Dreamlight/Iray/Luxury Pool Mansion HDRIs Day/Luxury Pool Mansion HDRIs Map 03 Shade.duf
2025-03-24 05:07:13.374 [INFO] :: Unlocking viewport redraw...
2025-03-24 05:07:13.374 [INFO] :: Viewport redraw unlocked.
I have DreamLights' Swedish Rocks HDRIs and the render DUFs that come with that definitely alter the view.

Comments
This started when moving from 4.22 to 4.23.
I looked in the DUF files and it says:
"image_library" : [ { "id" : "LuxuryPoolMansion03_Shade.hdr", "name" : "LuxuryPoolMansion03_Shade.hdr", "map_gamma" : 1, "map" : [{
"url" : "/Runtime/Textures/Dreamlight/Iray/Luxury%20Pool%20Mansion%20HDRIs%20Day/LuxuryPoolMansion03_Shade.hdr",
"label" : "LuxuryPoolMansion03_Shade.hdr"
} ] } ],
Now I got to my content and the listed file is there. Not sure why it can't find it.
Is D:/Daz3D/ a content directory?
Of course it is. It is my main content directory. The weird thing is there are other HDRI products, such as Dreamlight's Movie Maker Metropolis Day, that are also in that location working just fine. It's just these assets that aren't working.
This is part of my AppData\Roaming\DAZ 3D\InstallManager\UserAccounts\Account.ini file:
[General]
DownloadPath=D:/Daz3D-Install/Applications/Data/DAZ 3D/InstallManager/Downloads
CurInstallPath=D:/Daz3D
Software64Path=D:/Daz3D-Install/Applications/64-bit
Software32Path=D:/Daz3D-Install/Applications/32-bit
That is DIM, not Daz Studio - though it seems you are OK anyway.
Ok, except my HDRIs aren't working. Do I enter a ticket?