Errors building flexunit tasks using ant

Hi

I am having trouble while trying to run flexunit tests through ant script I have searched all over the internet but cannot find anything helpful. For my project I am using Flash builder 4.6 and flex sdk 4.6.

Ant version being used is 1.8.4

I am getting error when i run the ant script. below is a complete trace.

Buildfile: C:\cygwin\home\Admin\mca\apps\nac\build.xml

build:

clean:

      [delete] Deleting directory C:\cygwin\home\Admin\mca\apps\nac\release

init:

       [mkdir] Created dir: C:\cygwin\home\Admin\mca\apps\nac\build

        [copy] Copying 2 files to C:\cygwin\home\Admin\mca\apps\nac\build

       [mkdir] Created dir: C:\cygwin\home\Admin\mca\apps\nac\release

compile:

       [mxmlc] Loading configuration file C:\Program Files\Adobe\Adobe Flash Builder 4.6\sdks\4.6.0\frameworks\air-config.xml

       [mxmlc] C:\cygwin\home\Admin\mca\apps\nac\build\Nimbutas.swf (850356 bytes)

package:

cleanup:

      [delete] Deleting directory C:\cygwin\home\Admin\mca\apps\nac\build

test:

cleanFlexUnitReport:

        [echo] Deleting FlexUnit Report Directory...

      [delete] Deleting directory C:\cygwin\home\Admin\mca\apps\nac\flexunitreports

        [echo] Deleted FlexUnit Report Directory

        [echo] Creating FlexUnit Report Directory...

       [mkdir] Created dir: C:\cygwin\home\Admin\mca\apps\nac\flexunitreports

        [echo] Created FlexUnit Report Directory

cleanTest:

        [echo] Deleting Test Directory...

      [delete] Deleting directory C:\cygwin\home\Admin\mca\apps\nac\flexunittest

        [echo] Deleted Test Directory

        [echo] Creating Test Directory...

       [mkdir] Created dir: C:\cygwin\home\Admin\mca\apps\nac\flexunittest

        [echo] Created Test Directory

compileTestRunner:

        [echo] Compiling Test Runner SWF To Test

       [mxmlc] Loading configuration file C:\Program Files\Adobe\Adobe Flash Builder 4.6\sdks\4.6.0\frameworks\flex-config.xml

       [mxmlc] Warning: Source path entry, 'C:\cygwin\home\Admin\mca\apps\nac\src\flexUnitTests\com\nimbutas', is a subdirectory of source path entry, 'C:\cygwin\home\Admin\mca\apps\nac\src'.

       [mxmlc] Required RSLs:

       [mxmlc]     http://fpdownload.adobe.com/pub/swz/flex/4.6.0.23201/framework_4.6.0.23201.swz with 1 failover.

       [mxmlc]     http://fpdownload.adobe.com/pub/swz/tlf/2.0.0.232/textLayout_2.0.0.232.swz with 1 failover.

       [mxmlc]     http://fpdownload.adobe.com/pub/swz/flex/4.6.0.23201/spark_4.6.0.23201.swz with 1 failover.

       [mxmlc]     http://fpdownload.adobe.com/pub/swz/flex/4.6.0.23201/sparkskins_4.6.0.23201.swz with 1 failover.

       [mxmlc]     http://fpdownload.adobe.com/pub/swz/flex/4.6.0.23201/mx_4.6.0.23201.swz with 1 failover.

       [mxmlc] C:\cygwin\home\Admin\mca\apps\nac\flexunittest\FlexUnitApplication.swf (352174 bytes)

        [echo] Compiled Test Runner SWF To Test

executeTestRunner:

        [echo] Running Test Runner SWF

    [flexunit] Validating task attributes ...

BUILD FAILED

C:\cygwin\home\Admin\mca\apps\nac\build.xml:24: The following error occurred while executing this line:

C:\cygwin\home\Admin\mca\apps\nac\build.xml:31: The following error occurred while executing this line:

C:\cygwin\home\Admin\mca\apps\nac\build.xml:151: java.lang.NullPointerException

And here is my build.xml file

<?xml version="1.0" encoding="UTF-8"?>

<project name="Build File" basedir="." default="build">

    <!--location of property file -->

    <property file="${basedir}/build.properties" description="your specific properities for builds" />

    <!-- additional tasks -->

    <taskdef name="mxmlc" classname="flex.ant.MxmlcTask" classpath="${FLEX_TASKS}"/>

    <taskdef name="compc" classname="flex.ant.CompcTask" classpath="${FLEX_TASKS}"/>

    <taskdef name="asdoc" classname="flex.ant.AsDocTask" classpath="${FLEX_TASKS}"/>

    <taskdef resource="flexUnitTasks.tasks" classpath="${FlexUnitTasks.file}"/>

    <!--

       Build

   -->

    <target name="build" description="compiles application">

        <antcall target="init"/>

        <antcall target="package"/>

        <antcall target="cleanup"/>

        <antcall target="test"/>

    </target>

    <target name="test" description="compiles unit tests">

        <antcall target="cleanFlexUnitReport"/>

        <antcall target="cleanTest"/>

        <antcall target="compileTestRunner"/>

        <antcall target="executeTestRunner"/>

    </target>

    <target name="compile"

        description="Compiles the AIR application to a SWF file and places SWF in a temp directory to be packaged.">

        <mxmlc file="${SOURCE_DIR}/${APP_NAME}.${APP_EXTENSION}"

            output="${BUILD_DIR}/${APP_NAME}.swf"

            locale="${LOCALE}"

            static-rsls="true"

            accessible="true"

            configname="air"

            debug="${DEBUG_FLAG}"

            failonerror="true"

            fork="true">

            <source-path path-element="${SOURCE_DIR}"/>

            <source-path path-element="${basedir}/resources"/>

            <external-library-path file="${APP_HOME}/libs/airglobal.swc" append="true"/>

            <library-path dir="${LIBRARY_DIR}" includes="*.swc" append="true"/>

        </mxmlc>

    </target>

    <target name="certificate" unless="CERTIFICATE_FLAG">

        <java jar="${ADT}" fork="true"

            failonerror="true">

            <arg value="-certificate"/>

            <arg value="-cn"/>

            <arg value="${CERT_NAME}"/>

            <arg value="-ou"/>

            <arg value="${CERT_ORG_UNIT}"/>

            <arg value="-o"/>

            <arg value="${CERT_ORG_NAME}"/>

            <arg value="-c"/>

            <arg value="${CERT_COUNTRY}"/>

            <arg value="${CERT_KEY_TYPE}"/>

            <arg value="${KEYSTORE}"/>

            <arg value="${CERT_PASSWORD}"/>

        </java>

    </target>

    <target name="package" depends="compile"

        description="Packages the build SWF file from a temp directory.">

        <java jar="${ADT}" fork="true"

            failonerror="true">

            <arg value="-package"/>

            <arg value="-tsa" />

            <arg value="http://ca.signfiles.com/TSAServer.aspx" />

            <arg value="-storetype"/>

            <arg value="${STORETYPE}"/>

            <arg value="-keystore"/>

            <arg value="${KEYSTORE}"/>

            <arg value="-storepass"/>

            <arg value="${CERT_PASSWORD}"/>

            <arg value="${RELEASE_DIR}/${APP_NAME}.air"/>

            <arg value="${SOURCE_DIR}/${APP_NAME}-app.xml"/>

            <arg value="-C"/>

            <arg value="${BUILD_DIR}"/>

            <arg value="${BUILD_DIR}/${APP_NAME}.swf"/>

            <arg value="${BUILD_DIR}/Doorbell-old-tring.mp3"/>

            <arg value="${BUILD_DIR}/US_ringback_tone.mp3"/>

        </java>

    </target>

    <target name="init" depends="clean"

    description="Cleans the deploy file">

        <mkdir dir="${BUILD_DIR}"/>

        <copy todir="${BUILD_DIR}">

            <fileset dir="${basedir}/resources"/>

          </copy>

        <mkdir dir="${RELEASE_DIR}"/>

        <available file="${KEYSTORE}" property="CERTIFICATE_FLAG"/>

    </target>

    <!-- start of flex unit tests -->

    <target name="cleanFlexUnitReport" description="Cleans the Report file">

            <echo>Deleting FlexUnit Report Directory...</echo>

            <delete dir="${FlexUnitReport.dir}" failOnError="false"

                includeEmptyDirs="true" />

            <echo>Deleted FlexUnit Report Directory</echo>

            <echo>Creating FlexUnit Report Directory...</echo>

            <mkdir dir="${FlexUnitReport.dir}" />

            <echo>Created FlexUnit Report Directory</echo>

        </target>

    <target name="cleanTest" description="Cleans the Test file">

        <echo>Deleting Test Directory...</echo>

        <delete dir="${Test.dir}" failOnError="false"

            includeEmptyDirs="true" />

        <echo>Deleted Test Directory</echo>

        <echo>Creating Test Directory...</echo>

        <mkdir dir="${Test.dir}" />

        <echo>Created Test Directory</echo>

    </target>

    <target name="compileTestRunner">

            <echo>Compiling Test Runner SWF To Test</echo>

            <mxmlc file="${TestRunnerSrc.dir}/${TestRunner.name}.mxml"

                output="${Test.dir}/${TestRunner.name}.swf"

                debug="true">

                <load-config filename="${FLEX_HOME}/frameworks/flex-config.xml"/>

                <compiler.source-path path-element="${SOURCE_DIR}/flexUnitTests/com/nimbutas" />

                <compiler.library-path dir="${TestRunnerLib.dir}" append="true">

                    <include name="*.swc"/>

                </compiler.library-path>

                <compiler.verbose-stacktraces>true</compiler.verbose-stacktraces>

                <compiler.headless-server>true</compiler.headless-server>

            </mxmlc>

            <echo>Compiled Test Runner SWF To Test</echo>

        </target>

    <target name="executeTestRunner" description="executes the test runner app">

            <echo>Running Test Runner SWF</echo>

            <flexunit

                toDir="${FlexUnitReport.dir}"

                haltonfailure="true"

                verbose="true"

                player="air"

                headless="false"/>

            <echo>Ran Test Runner SWF</echo>

            <echo>Generate Readable Tests</echo>

            <junitreport todir="${FlexUnitReport.dir}">

                <fileset dir="${FlexUnitReport.dir}">

                    <include name="TEST-*.xml"/>

                </fileset>

                <report format="frames" todir="${FlexUnitReport.dir}/html"/>

            </junitreport>

            <echo>Generated Readable Tests</echo>

        </target>

    <!-- end of flex unit tests -->

    <target name="clean"

        description="Cleans up old files.">

        <delete dir="${BUILD_DIR}" failOnError="false" includeEmptyDirs="true" />

        <delete dir="${RELEASE_DIR}" failOnError="false" includeEmptyDirs="true" />

    </target>

    <target name="cleanup"

        description="Cleans up old files.">

        <delete dir="${BUILD_DIR}" failOnError="false" includeEmptyDirs="true" />

    </target>

</project>