Unexpected element 'define-configuration-property'

[GoogleCodeExporter]

Is this Maven 1 or Maven 2?
I have not use Maven or ant. I just import the jar into my project. And
when I build project, the unexpection occurs.
What steps will reproduce the problem?
1. I import all the dependency jars,flute-1.3.jar gwt-user.jar
junit-3.8.1.jar sac-1.3.jar javaswf.jar
gwt-dev.jar,gwt-incubator-20091216-r1739.jar
2. build the build.xml

What is the expected output? What do you see instead?
output you can see the attach.

What version of the product are you using? On what operating system?
gwt2.0 on windows xp

Please provide any additional information below.
build content:
<target name="gwt-compile" depends="gwt-compile.check, init"
        unless="gwtBuild.notRequired" description="Perform GWT Compile">
        <java classname="com.google.gwt.dev.Compiler" fork="true"
            failonerror="true" maxmemory="${gwt-compile.maxmemory}">
            <classpath refid="classpath" />
            <jvmarg value="-Xss${gwt-compile.maxstack}" />
            <arg value="-war" />
            <arg value="${gwt.output.dir}" />
            <arg value="${gwt-module.path}" />
            <arg value="-localWorkers" />
            <arg value="${gwt-compile.localWorkers}" />
            <arg value="-logLevel" />
            <arg value="${gwt-log-level}" />
            <arg value="-style" />
            <arg value="${gwt-style}" />
        </java>
        <touch file="${bin.dir}/.gwtBuild-${gwt-module.path}" />
    </target>

Original issue reported on code.google.com by colinTon...@gmail.com on 22 Jan 2010 at 3:45

[GoogleCodeExporter]

Actually, I discover where the problem is. Please delete this post.

Original comment by colinTon...@gmail.com on 26 Jan 2010 at 8:42

[GoogleCodeExporter]

To  colinTongzw, wat solved te problem?

Original comment by amar...@gmail.com on 23 Mar 2010 at 3:09

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I have that error too, so I'm interested in the solution you found to it!

Xavier

Original comment by xavier.l...@gmail.com on 24 Mar 2010 at 4:24

[GoogleCodeExporter]

Any idea why this error?

Original comment by manish.b...@gmail.com on 26 Mar 2010 at 12:01

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I solved this issue.  What I did was remove gwt-dev-windows.jar from my 
classpath.  I 
think it was from an older version of GWT and I suspect it was causing an old 
version 
of a class (or classes) to be loaded.

Original comment by jeff.sie...@gmail.com on 30 Mar 2010 at 11:03