XnView MP and Photoshop *.ACR files.

[FKCapitalism2]

Still facing lots of issues and confusion with how XnViewMP handles sidecars.

When i assign Photoshop to Open With (Alt+1) menu and start it with on 007.ARW then it creates sidecar 007.XMP.

1. However that 007.XMP is only used when i use Open With (Alt+1) from XnViewMP menu, if i open using Photoshop > File > Open and select 007.ARW it does NOT load 007.XMP automatically as it should.

2. If Photoshop > File > Open used then changes made to 007.ARW in Adobe Camera Raw then it saves new sidecar file 007.arw_xmp because file 007.XMP already exists.


Pinpointed the problem its because when opening 007.ARW with Open With (Alt+1) and save changes then inside 007.XMP it adds line

Code: Select all

photoshop:SidecarForExtension="ARW "

space after "ARW ", this is reason it never being auto loaded from Photoshop Photoshop > File > Open


If Photoshop > File > Open then save XMP it will have

Code: Select all

photoshop:SidecarForExtension="ARW"

no space after "ARW", then XMP loads properly when opening from Photoshop > File > Open and select 007.ARW


From what i understand when opening one file in XnViewMP using Alt+1 then it adds spaced "ARW " to that file's XMP, however if opening multiple files in XnViewMP then it adds spaced "ARW " only to the last file in series, must be something in part of source that supply file path or file name to external program.

[xnview]

Pinpointed the problem its because when opening 007.ARW with Open With (Alt+1) and save changes then inside 007.XMP it adds line

Code: Select all

photoshop:SidecarForExtension="ARW "

space after "ARW ", this is reason it never being auto loaded from Photoshop Photoshop > File > Open

photoshop:SidecarForExtension is added by which app?

[FKCapitalism2]

Pinpointed the problem its because when opening 007.ARW with Open With (Alt+1) and save changes then inside 007.XMP it adds line

Code: Select all

photoshop:SidecarForExtension="ARW "

space after "ARW ", this is reason it never being auto loaded from Photoshop Photoshop > File > Open

photoshop:SidecarForExtension is added by which app?

Its added by Photoshop's Adobe Camera RAW plugin when saving settings after editing ARW file it creates XMP with this settings.

However i assume the file path depends on the path that XnViewMP provides to the Photoshop there must be trailing space somewhere.

[FKCapitalism2]

My old command looked like this note -NoSplash argument, but any argument can cause this problem...

1.jpg

...because last filenames supplied has trailing space "C:\Program Files\Adobe\Adobe Photoshop 2026\Photoshop.exe" "D:\01.arw" "D:\02.arw" "D:\03.arw" -NoSplash" note the space between "D:\03.arw" -NoSplash.

somehow Photoshop understands this command like this uses "D:\03.arw " (space after extension.

Can't fix in XnViewMP as if i change order of command it does not open files in Photoshop just launching the program "C:\Program Files\Adobe\Adobe Photoshop 2026\Photoshop.exe" -NoSplash "D:\01.arw" "D:\02.arw" "D:\03.arw" -NoSplash" .

So only fix is to remove all the arguments from XnViewMP's Configure programs dialog.

Then after saving changes in Photoshop - Adobe Camera Raw creates .xmp sidecar file with proper command photoshop:SidecarForExtension="ARW" instead of photoshop:SidecarForExtension="ARW "