P: SDK: photo:applyDevelopPreset() changes all settings, not just those of preset

Unfortunately, while 7.4 fixes the problem with photo:applyDevelopPreset(), it doesn't address the related problem with preset:getSetting().  See this previous post for the test script: 
https://feedback.photoshop.com/photoshop_family/topics/lr-classic-7-3-resets-settings-when-develop-p...

Ganesh, please see this post for a script that demonstrates both symptoms of the bug:
https://feedback.photoshop.com/photoshop_family/topics/lr-classic-7-3-resets-settings-when-develop-p...

There are two symptoms of the same underlying bug:

- preset:getSetting() returns all develop settings, not just those set by the preset

- photo:applyDevelopPreset() changes all settings, not just those of the preset

Here is a script and accompany preset that demonstrates both symptoms:
https://www.dropbox.com/s/pp5hjilw3zeno9r/applypresetsbug.2018.06.12.zip?dl=0

To run the script:

1. Install the accompanying preset "ApplyPresetsBug.xmp" in the User Presets
   group. This preset sets Exposure to 1.23 but not other setting.

2. Place "applypresetsbug.lua" in LR's Scripts folder and run it from the Scripts menu.

In LR 7.3.1, preset:getSetting() returns all develop settings, not just the settings actually changed by the preset. This breaks existing plugins.

For example, the .xmp of a preset that changes just Exposure contains just the Exposure2012 develop setting:

   crs:Exposure2012="-0.12"

But preset:getSetting() returns all the develop settings:

{--table: 1
    AutoBrightness = false, 
    AutoContrast = false, 
    AutoExposure = false, 
    AutoGrayscaleMix = false, 
    AutoLateralCA = 0, 
    AutoShadows = false, 
    AutoTone = false, 
    Blacks2012 = 0, 
    BlueHue = 0, 
    BlueSaturation = 0, 
    Brightness = 50, 
    ChromaticAberrationB = 0, 
    ChromaticAberrationR = 0, 
    Clarity = 0, 
    Clarity2012 = 0, 
    ColorNoiseReduction = 25, 
    ColorNoiseReductionDetail = 50, 
    ColorNoiseReductionSmoothness = 50, 
    Contrast = 25, 
    Contrast2012 = 0, 
    ConvertToGrayscale = false, 
    Defringe = 0, 
    DefringeGreenAmount = 0, 
    DefringeGreenHueHi = 60, 
    DefringeGreenHueLo = 40, 
    DefringePurpleAmount = 0, 
    DefringePurpleHueHi = 70, 
    DefringePurpleHueLo = 30, 
    Dehaze = 0, 
    EnableCalibration = true, 
    EnableCircularGradientBasedCorrections = true, 
    EnableColorAdjustments = true, 
    EnableDetail = true, 
    EnableEffects = true, 
    EnableGradientBasedCorrections = true, 
    EnableGrayscaleMix = true, 
    EnableLensCorrections = true, 
    EnablePaintBasedCorrections = true, 
    EnableRedEye = true, 
    EnableRetouch = true, 
    EnableSplitToning = true, 
    EnableToneCurve = true, 
    EnableTransform = true, 
    Exposure = 0, 
    Exposure2012 = -0.12, 
    FillLight = 0, 
    GrainAmount = 0, 
    GrainFrequency = 50, 
    GrainSize = 25, 
    GrayMixerAqua = 0, 
    GrayMixerBlue = 0, 
    GrayMixerGreen = 0, 
    GrayMixerMagenta = 0, 
    GrayMixerOrange = 0, 
    GrayMixerPurple = 0, 
    GrayMixerRed = 0, 
    GrayMixerYellow = 0, 
    GreenHue = 0, 
    GreenSaturation = 0, 
    HighlightRecovery = 0, 
    Highlights2012 = 0, 
    HueAdjustmentAqua = 0, 
    HueAdjustmentBlue = 0, 
    HueAdjustmentGreen = 0, 
    HueAdjustmentMagenta = 0, 
    HueAdjustmentOrange = 0, 
    HueAdjustmentPurple = 0, 
    HueAdjustmentRed = 0, 
    HueAdjustmentYellow = 0, 
    LensManualDistortionAmount = 0, 
    LensProfileEnable = 0, 
    LensProfileSetup = "LensDefaults", 
    LuminanceAdjustmentAqua = 0, 
    LuminanceAdjustmentBlue = 0, 
    LuminanceAdjustmentGreen = 0, 
    LuminanceAdjustmentMagenta = 0, 
    LuminanceAdjustmentOrange = 0, 
    LuminanceAdjustmentPurple = 0, 
    LuminanceAdjustmentRed = 0, 
    LuminanceAdjustmentYellow = 0, 
    LuminanceNoiseReductionContrast = 0, 
    LuminanceNoiseReductionDetail = 50, 
    LuminanceSmoothing = 0, 
    OverrideLookVignette = false, 
    ParametricDarks = 0, 
    ParametricHighlights = 0, 
    ParametricHighlightSplit = 75, 
    ParametricLights = 0, 
    ParametricMidtoneSplit = 50, 
    ParametricShadows = 0, 
    ParametricShadowSplit = 25, 
    PerspectiveAspect = 0, 
    PerspectiveHorizontal = 0, 
    PerspectiveRotate = 0, 
    PerspectiveScale = 100, 
    PerspectiveUpright = 0, 
    PerspectiveVertical = 0, 
    PerspectiveX = 0, 
    PerspectiveY = 0, 
    PostCropVignetteAmount = 0, 
    PostCropVignetteFeather = 50, 
    PostCropVignetteHighlightContrast = 0, 
    PostCropVignetteMidpoint = 50, 
    PostCropVignetteRoundness = 0, 
    PostCropVignetteStyle = 1, 
    ProcessVersion = "10.0", 
    RedEyeInfo = {}, 
    RedHue = 0, 
    RedSaturation = 0, 
    RetouchInfo = {}, 
    Saturation = 0, 
    SaturationAdjustmentAqua = 0, 
    SaturationAdjustmentBlue = 0, 
    SaturationAdjustmentGreen = 0, 
    SaturationAdjustmentMagenta = 0, 
    SaturationAdjustmentOrange = 0, 
    SaturationAdjustmentPurple = 0, 
    SaturationAdjustmentRed = 0, 
    SaturationAdjustmentYellow = 0, 
    Shadows = 5, 
    Shadows2012 = 0, 
    ShadowTint = 0, 
    SharpenDetail = 25, 
    SharpenEdgeMasking = 0, 
    SharpenRadius = 1, 
    Sharpness = 40, 
    SplitToningBalance = 0, 
    SplitToningHighlightHue = 0, 
    SplitToningHighlightSaturation = 0, 
    SplitToningShadowHue = 0, 
    SplitToningShadowSaturation = 0, 
    ToneCurve = {--table: 2
        [1] = 0, 
        [2] = 0, 
        [3] = 32, 
        [4] = 22, 
        [5] = 64, 
        [6] = 56, 
        [7] = 128, 
        [8] = 128, 
        [9] = 192, 
        [10] = 196, 
        [11] = 255, 
        [12] = 255}, 
    ToneCurveBlue = {--table: 3
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurveGreen = {--table: 4
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurveName = "Medium Contrast", 
    ToneCurveName2012 = "Linear", 
    ToneCurvePV2012 = {--table: 5
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurvePV2012Blue = {--table: 6
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurvePV2012Green = {--table: 7
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurvePV2012Red = {--table: 8
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneCurveRed = {--table: 9
        [1] = 0, 
        [2] = 0, 
        [3] = 255, 
        [4] = 255}, 
    ToneMapStrength = 0, 
    UprightCenterMode = 0, 
    UprightCenterNormX = 0.5, 
    UprightCenterNormY = 0.5, 
    UprightFocalLength35mm = 35, 
    UprightFocalMode = 0, 
    UprightFourSegmentsCount = 0, 
    UprightPreview = false, 
    UprightTransformCount = 6, 
    UprightVersion = 151388160, 
    Version = "10.3", 
    Vibrance = 0, 
    VignetteAmount = 0, 
    VignetteMidpoint = 50, 
    WhiteBalance = "As Shot", 
    Whites2012 = 0}

following... applying presets via script resets every setting to 0 which r not included in preset!

I have the same problem... I have a preset that sets the sharpening parameters.  When I apply it in LR Classic CC 7.3.1 it reverts the basic parameters to default.

Ganesh I have no time to debug and troubleshoot for you, I pay for the software, I do not get paid to use it. If you want to pay me to debug it for you, I will be glad to do so.

@9206501 Lr 7.3.1 does not has the fix. Can you provide more details about the "assertion failed" dialog box. If possible please share the exact script which you are testing over email. One of our team member already contacted you over email some time back.

Regards,
Ganesh

Hey Ganesh, 7.3.1 not only DOESNT fix this, it makes scripts totally useless. I get "Assertion Failed" dialog box. How is this even released without passing this test?