CSS Image loading problem by dynamically loading from fxml file?

Question

h1. Introduction
The application I am developing loads an FXML file from a Controller. The FXML uses CSS and images for buttons are set in the CSS.
CSS directory structure
<package>.fxml
Images
<package>.fxml.resources.<subdir>
Example CSS Code
.buttonImage {
    -fx-background-image: url("resources/subdir/image.png");
}Example loading fxml from controller code
         URL location = getClass().getResource("/package/fxml/UI.fxml");
         FXMLLoader fxmlLoader = new FXMLLoader(location);
         fxmlLoader.setLocation(location);
         fxmlLoader.setBuilderFactory(new JavaFXBuilderFactory());
         Parent root = (Parent)fxmlLoader.load(location.openStream());
         Controller = (Controller) fxmlLoader.getController();
         newPane.getChildren().add(root);h1. Problem
The fxml file does not load and causes the following error:
javafx.fxml.LoadException: Page language not specified.Note, the fxml file loaded correctly before images were added.
Any ideas of what might be going wrong?
h1. Attempted
I have attempted the following: tried changing the url of the image as an absolute path.

Answer 1

No Problem: Note, this is the actual FXML, my previous examples were simplifications of package names and class names in order to directly illustrate the problem. Note, I am using SceneBuilder to develop the FXML file.
<?xml version="1.0" encoding="UTF-8"?>
<?import java.lang.*?>
<?import java.net.*?>
<?import java.util.*?>
<?import javafx.collections.*?>
<?import javafx.scene.*?>
<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>
<AnchorPane id="AnchorPane" prefHeight="396.0000999999975" prefWidth="350.0" styleClass="mainFxmlClass" xmlns:fx="http://javafx.com/fxml" fx:controller="com.monkygames.kbmaster.controller.ProfileUIController">
  <children>
    <Label layoutX="14.0" layoutY="14.0" text="Profiles">
      <font>
        <Font size="18.0" />
      </font>
    </Label>
    <GridPane layoutX="15.0" layoutY="44.0" prefHeight="99.0" prefWidth="335.0">
      <children>
        <Label text="Type: " GridPane.columnIndex="0" GridPane.rowIndex="0" />
        <ComboBox fx:id="typeCB" prefWidth="249.0" GridPane.columnIndex="1" GridPane.rowIndex="0">
          <items>
            <FXCollections fx:factory="observableArrayList">
              <String fx:value="Item 1" />
              <String fx:value="Item 2" />
              <String fx:value="Item 3" />
            </FXCollections>
          </items>
        </ComboBox>
        <Label text="Program: " GridPane.columnIndex="0" GridPane.rowIndex="1" />
        <ComboBox fx:id="programCB" prefWidth="249.0" GridPane.columnIndex="1" GridPane.rowIndex="1">
          <items>
            <FXCollections fx:factory="observableArrayList">
              <String fx:value="Item 1" />
              <String fx:value="Item 2" />
              <String fx:value="Item 3" />
            </FXCollections>
          </items>
        </ComboBox>
        <Label text="Profile: " GridPane.columnIndex="0" GridPane.rowIndex="2" />
        <ComboBox prefWidth="249.0" GridPane.columnIndex="1" GridPane.rowIndex="2">
          <items>
            <FXCollections fx:factory="observableArrayList">
              <String fx:value="Item 1" />
              <String fx:value="Item 2" />
              <String fx:value="Item 3" />
            </FXCollections>
          </items>
        </ComboBox>
      </children>
      <columnConstraints>
        <ColumnConstraints fillWidth="false" halignment="RIGHT" hgrow="NEVER" maxWidth="-Infinity" minWidth="10.0" prefWidth="80.0" />
        <ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
      </columnConstraints>
      <rowConstraints>
        <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
        <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
      </rowConstraints>
    </GridPane>
    <HBox layoutX="14.0" layoutY="150.0" prefHeight="159.0" prefWidth="335.0">
      <children>
        <Label text="Description: " />
        <TextArea prefHeight="172.0" prefWidth="247.0" wrapText="true" />
      </children>
    </HBox>
    <HBox alignment="CENTER" layoutX="11.0" layoutY="334.0" prefHeight="48.0" prefWidth="329.0">
      <children>
        <Button fx:id="newProfileB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="newProfile" text="New Profile" />
        <Button id="newProfileB" fx:id="cloneProfileB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="cloneProfile" text="Clone Profile" />
        <Button id="newProfileB" fx:id="importProfileB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="importProfile" text="Import Profile" />
        <Button id="newProfileB" fx:id="exportProfileB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="exportProfile" text="Export Profile" />
        <Button id="newProfileB" fx:id="printPDFB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="pdfProfile" text="Print to PDF" />
        <Button id="newProfileB" fx:id="deleteProfileB" contentDisplay="GRAPHIC_ONLY" minHeight="48.0" minWidth="48.0" mnemonicParsing="false" onAction="profileEventFired" prefHeight="48.0" prefWidth="48.0" styleClass="deleteProfile" text="Delete Profile" />
      </children>
    </HBox>
  </children>
  <stylesheets>
    <URL value="@master.css" />
    <URL value="@profile.css" />
  </stylesheets>
</AnchorPane>Edited by: 960799 on Jan 4, 2013 8:58 PM
Edited by: 960799 on Jan 4, 2013 8:59 PM