if SaveDialogPSD.Execute then
      begin
        FlName := SaveDialogPSD.FileName;
        
        Child.ImageEnView1.LockUpdate;

        Application.ProcessMessages;

        Child.ImageEnView1.EnableAlphaChannel := True;
        Child.ImageEnView1.DpiX := 200;
        Child.ImageEnView1.DpiY := 200;
        Child.ImageEnView1.IO.Params.JPEG_Quality := 100;
        Child.ImageEnView1.IO.Params.JPEG_Smooth := 3;
        Child.ImageEnView1.IO.Params.JPEG_Progressive := False;
        Child.ImageEnView1.IO.Params.JPEG_ColorSpace :=ioJPEG_RGB;        
        
        try
          Child.ImageEnView1.IO.SaveToFilePSD(FlName);
        except on E: Exception do
          ShowMessage('Error while Saving Image.' + #13 + E.Message);
        end;

        Application.ProcessMessages;

        ProgressBar1.Position := 0;            

        Child.Changed := False;
        Child.Close;
        Child.Free;

if SaveDialog1.Execute then
begin
  Child.ImageEnView1.LayersSaveToFile(SaveDialog1.FileName);
end;

quote:

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1. What operating system are you using?

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quote:

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2. What version of Delphi are you using?

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3. How much ram is installed?

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4. Is your app compiled as Win32 or Win64?

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5. What are the dimensions of the psd file?

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6. How many layers are in the psd file?

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7. Are you running the app from the IDE?

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8. Do you get the same errors when you run the exe outside of the IDE?

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quote:

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9. Have you tried compiling as Win64 with the IELIB64.DLL in the applications folder? If not, try compiling as Win64 and see if you get the same errors. If you provide a link to get the file you are testing I can try testing it here for you.

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quote:

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lock update of ImageEnMultiView and then update a few thumbnails (which in our case it colorizing selected thumbnails) and then unlocking update the previously colorized thumbnails are getting undone

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What was your StoreMode? It needs to be ietNormal if you are changing the content of the images in a TImageEnMView.

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var
  iIndex: Integer;
begin
  iIndex := ImageEnMView1.SelectedImage;
  if iIndex <> -1 then
    if FileExists(ImageEnMView1.MIO.Params[iIndex].FileName then)
      ImageEnView1.IO.LoadFromFileJpeg(ImageEnMView1.MIO.Params[iIndex].FileName);
end;