How do I downgrade maven?

I am getting errors that seem to be resolved by downgrading Maven 3.0 to 2. I do not know how to downgrade Maven on Windows 8.1 using gradle. I use Eclipse Luna, and Java FX.

Someone please help? I would greatly appreciate it.

When I run gradle it gives error:
Failed to notify task execution graph listener.


Not enough detail to go on. It’s not clear what you are doing.

What steps could someone take to reproduce this problem?

I am trying to do the JavaFX Android sample:

I will post my build.gradle file.

indent preformatted text by 4 spaces

task wrapper(type: Wrapper) {
gradleVersion = ‘2.3’

buildscript {
repositories {

dependencies {
    classpath 'org.javafxports:jfxmobile-plugin:1.0.0-b5'


apply plugin: ‘org.javafxports.jfxmobile’

mainClassName = ‘java.Main’

repositories {

jfxmobile {
ios {
forceLinkClasses = [‘java.**.*’]
android {
applicationPackage = ‘application’

here is my build.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<property environment="env"/>
<property name="ECLIPSE_HOME" value="../../eclipse/"/>
<property name="debuglevel" value="source,lines,vars"/>
<property name="target" value="1.8"/>
<property name="source" value="1.8"/>
<property name="src" location="src"/>
<property name="build" location="build"/>
<property name="dist" location="dist"/>
<path id="JavaFX SDK.libraryclasspath">
    <pathelement location="${ECLIPSE_HOME}plugins/org.eclipse.fx.ide.css.jfx8_2.0.0.201506111511.jar"/>
<path id="javafx_example.classpath">
    <pathelement location="bin"/>        
<target description="Build all projects which reference this project. Useful to propagate changes." name="build-refprojects"/>
<target description="copy Eclipse compiler jars to ant lib directory" name="init-eclipse-compiler">
    <copy todir="${ant.library.dir}">
        <fileset dir="${ECLIPSE_HOME}/plugins" includes="org.eclipse.jdt.core_*.jar"/>
    <unzip dest="${ant.library.dir}">
        <patternset includes="jdtCompilerAdapter.jar"/>
        <fileset dir="${ECLIPSE_HOME}/plugins" includes="org.eclipse.jdt.core_*.jar"/>
<target description="compile project with Eclipse compiler" name="build-eclipse-compiler">
    <property name="build.compiler" value="org.eclipse.jdt.core.JDTCompilerAdapter"/>
    <antcall target="build"/>

ok I found out if I downgrade maven plugins to specific versions: , it will fix my problem.

How do I tell Gradle to download specific versions of Maven Plugins.

Any help would be greatly appreciated,


I found out how to download versions, however still same error.