Module8 - Ant run error - Process Fork failed

Hi Ashish,
In Module8 while executing "ant run", i'm getting error Process Fork failed.

Could you suggest a fix as I cannot proceed further?

PS:
I have already added JAVA_HOME variable pointing to JDK. Even after adding it, getting same error.
[quote:2dke2u91]

-----last few lines of running "ant compile"
[javac] C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant\build.xml:79: warning: 'includeantruntime' was not set, defaultin
ble builds
[javac] Compiling 6 source files to C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant\build

BUILD SUCCESSFUL
Total time: 6 seconds

C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant>ant run
Buildfile: C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant\build.xml

run:
[junit] Running testcases.FirstTestCase
[junit] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0 sec

BUILD FAILED
[b:2dke2u91]C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant\build.xml:107:[color=#FF0000:2dke2u91] Process fork failed[/color:2dke2u91].[/b:2dke2u91]

Total time: 6 seconds

C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant>[/quote:2dke2u91]

[b:2dke2u91]Build.xml file snippet[/b:2dke2u91]

[quote:2dke2u91]<property name="ws.home" value="${basedir}"/>
<property name="ws.jars" value="C:\Selenium\eclipse-jee-mars-1-win32\plugins"/>
<property name="test.dest" value="${ws.home}/build"/>
<property name="test.src" value="${ws.home}/src"/>
<property name="test.reportsDir" value="C:\Selenium\SeleniumWorkspace\Module08_Junit_Ant\AntReports"/>

<javac
debug="true"
destdir="${test.dest}"
srcdir="${test.src}"
[b:2dke2u91] target="1.8" [/b:2dke2u91]
classpath="${test.classpath}"
>
</javac>

[/quote:2dke2u91]

[quote:2dke2u91]<target name="run" >
<delete includeemptydirs="true" quiet="true">
<fileset dir="${test.reportsDir}" includes="**/*"/>
</delete>
<java jar="${ws.jars}" fork="true" spawn="true" />
[b:2dke2u91][color=#FF0000:2dke2u91]line107------>>>>>>[/color:2dke2u91][/b:2dke2u91] <junit fork="yes" haltonfailure="no" printsummary="yes">
<classpath refid="testcase.path" /> [/quote:2dke2u91]