Colour sampler in CS2

With a document open in CS2 run this line in ESKT with Photoshop as the target app.

app.activeDocument.reflect.properties

If colorSamples are part of the CS2 Object Model it should be listed in the doc properties.

For most methods that use UnitValue object you can supply a number as the value and Photoshop uses the rulerUnit as the unit so I don't think the arguments are the problem. Even if they were I would expect a different error message.

Note that even with CC if you run that line in ESTK with the target app set to ESTK you will get the same error message. ESTK doesn't have an app.activeDocument. Did you run your code in ESTK with the wrong target app?

I'm also not sure about CS2.

But this code (to add a ColorSampler) works definitly in CS2:

var posX = 10;
var posY = 20;
var desc = new ActionDescriptor();
var ref = new ActionReference();
ref.putClass( charIDToTypeID( "ClSm" ) );
desc.putReference( charIDToTypeID( "null" ), ref );
var desc1 = new ActionDescriptor();
desc1.putUnitDouble( charIDToTypeID( "Hrzn" ), charIDToTypeID( "#Pxl" ), posX );
desc1.putUnitDouble( charIDToTypeID( "Vrtc" ), charIDToTypeID( "#Pxl" ), posY );
desc.putObject( charIDToTypeID( "Pstn" ), charIDToTypeID( "Pnt " ), desc1 );
executeAction( charIDToTypeID( "Mk  " ), desc, DialogModes.NO );

Have fun

I'm not sure about CS2, as I no longer have it, but you might need to define the point array with a pixel value such as:

var pt = ['0 px','0 px']

I think the need for the pixel value was dropped in later versions.