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java.util.UnknownFormatConversionException: Conversion = 'R'

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Anyone seen this error occur when having class path references

java.util.UnknownFormatConversionException: Conversion = 'R'

Here are the relevant build.xml snippets:

<!-- Really just an empty container -->
        <ant4eclipse:jdtClassPathLibrary name="org.eclipse.jst.j2ee.internal.module.container">
            <fileset dir="../ShareLibraries/testing/" includes="**/*.jar" />
        </ant4eclipse:jdtClassPathLibrary>

        <!-- read the eclipse classpath -->
        <ant4eclipse:getJdtClassPath pathId="build.classpath" workspaceDirectory="${workspace}" projectName="${ant.project.name}" />

AE-116 and AE-164

Scheduled in JIRA

This bug request has been scheduled in JIRA: AE-164 . Every further comment regarding this topic will be tracked using this issue.

We figured out the root cause

We figured out the root cause of this issue.  If you import a project into the current workspace, but leave the contents in the existing folder, ant4eclipse chokes on it.