Fixed gpl parser and png drop palette

src/PixiEditor/Models/IO/PaletteParsers/GimpGplParser.cs

@@ -46,9 +46,19 @@ internal class GimpGplParser : PaletteFileParser
                 }
             }
 
-            var r = byte.Parse(colorParts[0]);
-            var g = byte.Parse(colorParts[1]);
-            var b = byte.Parse(colorParts[2]);
+            if(colorParts.Length < 3) continue;
+
+            bool parsed = false;
+
+            parsed = byte.TryParse(colorParts[0], out byte r);
+            if(!parsed) continue;
+
+            parsed = byte.TryParse(colorParts[1], out byte g);
+            if(!parsed) continue;
+
+            parsed = byte.TryParse(colorParts[2], out byte b);
+            if(!parsed) continue;
+
             var color = new Color(r, g, b, 255); // alpha is ignored in PixiEditor
             if (colors.Contains(color)) continue;
 

src/PixiEditor/Views/UserControls/Palettes/PaletteViewer.xaml.cs

@@ -176,6 +176,7 @@ internal partial class PaletteViewer : UserControl
             return;
         }
 
+        e.Handled = true;
         await ImportPalette(filePath);
         dragDropGrid.Visibility = Visibility.Hidden;
     }