The "Invalid Property" Error is thrown at Line 20, which is for the TextField. No idea as to why it is being thrown. <?xml version="1.0" encoding="UTF-8"?> <?import java.lang.*?> <?import javafx.scene.control.*?> <?import javafx.scene.layout.*?> <?import javafx.scene.text.*?> <VBox prefHeight="400.0" prefWidth="284.0" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1"> <children> <AnchorPane maxHeight="-1.0" maxWidth="-1.0" prefHeight="375.0" prefWidth="285.0" VBox.vgrow="ALWAYS"> <children><Button fx:id="zero" layoutX="14.0" layoutY="321.0" mnemonicParsing="false" prefHeight="40.0" prefWidth="40.0" text="0" AnchorPane.bottomAnchor="14.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="230.0" /><Button fx:id="decimal" layoutX="54.0" layoutY="321.0" mnemonicParsing="false" prefHeight="40.0" prefWidth="40.0" text="." AnchorPane.bottomAnchor="14.0" AnchorPane.leftAnchor="68.0" AnchorPane.rightAnchor="176.0" /><Button fx:id="posneg" layoutX="94.0" layoutY="321.0" mnemonicParsing="false" prefHeight="40.0" prefWidth="40.0" text="+/-" AnchorPane.bottomAnchor="14.0" AnchorPane.leftAnchor="122.0" AnchorPane.rightAnchor="122.0" /><Button fx:id="one" layoutX="14.0" layoutY="271.0" mnemonicParsing="false" prefHeight="40.0" prefWidth="40.0" text="1" AnchorPane.bottomAnchor="68.0" AnchorPane.leftAnchor="14.0" AnchorPane.rightAnchor="230.0" /><Button fx:id="two" layoutX="54.0" layoutY="271.0" mnemonicParsing="false" prefHeight="40.0" prefWidth="40.0" text="2" AnchorPane.bottomAnchor="68.0" AnchorPane.leftAnchor="68.0" …

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Cannot get FXMLLoader to load this fxml. Error: Feb 19, 2014 11:25:01 PM com.github.geodox.goldminer.GoldMiner start SEVERE: null java.lang.NullPointerException: Location is required. at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2825) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2809) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2795) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2782) at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2771) at com.github.geodox.goldminer.GoldMiner.start(GoldMiner.java:24) at com.sun.javafx.application.LauncherImpl$5.run(LauncherImpl.java:319) at com.sun.javafx.application.PlatformImpl$5.run(PlatformImpl.java:219) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:182) at com.sun.javafx.application.PlatformImpl$4$1.run(PlatformImpl.java:179) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.application.PlatformImpl$4.run(PlatformImpl.java:179) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:76) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.access$100(WinApplication.java:17) at com.sun.glass.ui.win.WinApplication$3$1.run(WinApplication.java:67) at java.lang.Thread.run(Unknown Source) Code: package com.github.geodox.goldminer; import java.util.logging.Level; import java.util.logging.Logger; import javafx.application.Application; import javafx.fxml.FXMLLoader; import javafx.scene.Scene; import javafx.scene.layout.VBox; import javafx.stage.Stage; public class GoldMiner extends Application { public boolean running; public static void main(String[] args) { Application.launch(GoldMiner.class, (java.lang.String[])null); } @Override public void start(Stage primaryStage) { try …

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The End.