exception wile running build.xml

hi
while running the build.xml (while installing) the below is the exception

java.io.FileNotFoundException: D

below is the build.xml fil
----------------------------------------------

<project name="boomerang" default="compile" basedir="." >

<!-- Global properties for this script -->
<property file="build.properties" />
<property file="${user.home}/build.properties" />
<property name="app.name" value="boomerang" />
<property name="app.version" value="0.1-dev" />
<property name="app.path" value="/${app.name}" />
<property name="build.home" value="${basedir}/build" />
<property name="dist.home" value="${basedir}/dist" />
<property name="manager.url" value="http://localhost:6060/manager" />
<property name="src.home" value="${basedir}/src" />
<property name="web.home" value="${basedir}/webapp" />
<property name="compile.debug" value="true" />
<property name="compile.deprecation" value="false" />
<property name="compile.optimize" value="true" />
<property name="config" value="${basedir}/config" />
<property name="context" value="${catalina.home}/conf/Catalina/localhost" />

<path id="catalina-ant.class.path" >
<fileset dir="${catalina.home}/server/lib" >
<include name="catalina-ant.jar" />
</fileset>
</path>

<path id="compile.classpath" >
<fileset dir="${catalina.home}/common/lib" >
<include name="servlet-api.jar" />
</fileset>
<fileset dir="${basedir}/lib" >
<include name="**/*.jar" />
</fileset>
</path>

<taskdef name="deploy" classname="org.apache.catalina.ant.DeployTask" classpathref="catalina-ant.class.path"/>
<!--<taskdef name="install" classname="org.apache.catalina.ant.InstallTask" classpathref="catalina-ant.class.path" />-->
<taskdef name="list" classname="org.apache.catalina.ant.ListTask" classpathref="catalina-ant.class.path" />
<taskdef name="reload" classname="org.apache.catalina.ant.ReloadTask" classpathref="catalina-ant.class.path" />
<taskdef name="remove" classname="org.apache.catalina.ant.RemoveTask" classpathref="catalina-ant.class.path" />

<target name="all" depends="clean, compile" description="clean build and dist directories then compile" />

<target name="clean" description="delete old build and dist directories" >
<delete dir="${build.home}" />
<delete dir="${dist.home}" />
</target>

<target name="compile" depends="prepare" description="Compile Java Sources" >
<javac srcdir="${src.home}" destdir="${build.home}/WEB-INF/classes" debug="${compile.debug}" deprecation="${compile.deprecation}"
optimize="${compile.optimize}" >
<classpath refid="compile.classpath" />
</javac>

<copy todir="${build.home}/WEB-INF/classes" >
<fileset dir="${config}" excludes="**/*.xml" />
</copy>
</target>

<target name="dist" depends="compile" description="Create binary distribution" >
<!-- Create application WAR file -->
<jar jarfile="${dist.home}/${app.name}-${app.version}.war" basedir="${build.home}" />
</target>

<target name="install" depends="compile" description="Install application to servlet container" >
<echo message="Installing app...."/>

<deploy url="${manager.url}" username="${manager.username}" password="${manager.password}" path="${app.path}"
war="file:${build.home}${app.path}.war" />

<!-- <copy todir="${catalina.home}/conf/Catalina/localhost" >
<fileset dir="${basedir}/Config" excludes="struts-config.xml" />
</copy> -->
<echo message="Copied context xml. Check the log for deployment errors" />
</target>

<target name="list" description="List installed applications on servlet container">
<list url="${manager.url}" username="${manager.username}" password="${manager.password}"/>
</target>

<target name="prepare">
<!-- Create build directories as needed -->
<mkdir dir="${build.home}"/>
<mkdir dir="${build.home}/WEB-INF"/>
<mkdir dir="${build.home}/WEB-INF/classes"/>
<!-- Copy static content of this web application -->
<copy todir="${build.home}">
<fileset dir="${web.home}"/>
</copy>
<!-- Copy libs -->
<mkdir dir="${build.home}/WEB-INF/lib"/>

<copy todir="${build.home}/WEB-INF/lib">
<fileset dir="${basedir}/lib" includes="**/*.jar">

</fileset>
</copy>

<!--ir dir="${build.home}/jsp" />
<copy todir="${build.home}/pages" >
<fileset dir="${web.home}/WEB-INF/pages" includes="**/*" />
</copy> -->


<!-- Copy other properties, conf files -->
<copy todir="${build.home}/WEB-INF">
<fileset dir="${basedir}/config" includes="**/*"/>
</copy>

<!-- Externalised property files -->
<!--<mkdir dir="${user.home}/resources"/>
<copy todir="${build.home}/WEB-INF/classes">
<fileset dir="${basedir}/config" includes="*.properties"/>
</copy>-->
</target>

<target name="reload" depends="compile" description="Reload application on servlet container">
<reload url="${manager.url}" username="${manager.username}" password="${manager.password}" path="${app.path}"/>
</target>

<target name="remove" description="Remove application on servlet container">
<remove url="${manager.url}" username="${manager.password}" password="${manager.password}" path="${app.path}" />
<delete file="${context}/boomerang.xml" />
<!--<undeploy url="${manager.url}" username="${manager.username}" password="${manager.password}" path="${app.path}"/> -->
</target>

</project>

Srinus,
Which line throws the exception? Build failure messages come with a line number.

Also try running Ant using the -v or even -d option to get more info on what's happening.

<deploy url="${manager.url}" username="${manager.username}" password="${manager.password}" path="${app.path}"
war="file:${build.home}${app.path}.war" />

the above is throwing exception

Originally posted by srinus reddyy:
file:${build.home}${app.path}.war"

This looks like a problem. In Ant, files don't begin with "file:". They begin with a drive and path "c:\program ..." on Windows or the root "/test/..." on UNIX. Either can use a relative path.