PS linked objects script MacOS

@Lysandra26636147dc2x 

So the issue may not be *missing/broken links* but *modified links*... I thought the former, but when I open the file you sent me with the same directory structure, I get the following:

I don't get the red warning symbol for broken/missing links that I expected, which would require a relinking script. Modified links are much simpler.

Please try this script. It doesn't use the "update ALL modified content" command, it manually selects each linked smart ohject layer and performs the "update modified content" command on each layer. As you mentioned that the ALL command was inconsistent, I am hoping that this brute force approach works consistently.

/* 
Update All Modified Smart Object Layers.jsx
Stephen Marsh
v1.0 - Initial release
https://community.adobe.com/t5/photoshop-ecosystem-discussions/ps-linked-objects-script-macos/m-p/15521809
*/

#target photoshop

app.activeDocument.suspendHistory('Update all modified links...', 'main()');

function main() {
    if (!documents.length) return;
    var savedDialogs = app.displayDialogs;
    app.displayDialogs = DialogModes.NO;
    
    try {
        var layerIDs = [];
        collectLinkedSmartObjects(app.activeDocument, layerIDs);
                for (var i = 0; i < layerIDs.length; i++) {
            try {
                selectLayerByID(layerIDs[i]);
                // Update modified SO layers
                app.runMenuItem(stringIDToTypeID("placedLayerUpdateModified"));
            } catch (e) {}
        }
    } catch (e) {
    }
    // End of script
    app.displayDialogs = savedDialogs;
    app.beep();
    app.runMenuItem(stringIDToTypeID( "collapseAllGroupsEvent" ));
    alert("Finished updating " + layerIDs.length + " linked smart objects.");
}


///// Helper Functions /////

function collectLinkedSmartObjects(parent, layerIDs) {
    for (var i = 0; i < parent.layers.length; i++) {
        var layer = parent.layers[i];
        if (layer.typename === "ArtLayer") {
            if (isLinkedSmartObject(layer)) {
                layerIDs.push(layer.id);
            }
        } else if (layer.typename === "LayerSet") {
            collectLinkedSmartObjects(layer, layerIDs);
        }
    }
}

function isLinkedSmartObject(layer) {
    try {
        var ref = new ActionReference();
        ref.putIdentifier(charIDToTypeID("Lyr "), layer.id);
        var desc = executeActionGet(ref);
        if (desc.hasKey(stringIDToTypeID("smartObject"))) {
            var soDesc = desc.getObjectValue(stringIDToTypeID("smartObject"));
            if (soDesc.hasKey(stringIDToTypeID("linked"))) {
                return soDesc.getBoolean(stringIDToTypeID("linked"));
            }
        }
    } catch (e) {
        return false;
    }
    return false;
}

function selectLayerByID(id) {
    var ref = new ActionReference();
    ref.putIdentifier(charIDToTypeID("Lyr "), id);
    var desc = new ActionDescriptor();
    desc.putReference(charIDToTypeID("null"), ref);
    desc.putBoolean(charIDToTypeID("MkVs"), false);
    executeAction(charIDToTypeID("slct"), desc, DialogModes.NO);
}

1. Copy the code text to the clipboard
2. Open a new blank file in a plain-text editor (not in a word processor)
3. Paste the code in
4. Save as a plain text format file – .txt
5. Rename the saved file extension from .txt to .jsx
6. Install or browse to the .jsx file to run (see below)

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html