One of our nunit tests contained a invalid xml character, which broke the processing of xml report files:

Message in QB:
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    UnProcessed Reports

    Export XML

    The following XML reports were not processed because they are mal-formed. Please refer to the build log for details.

    » Show all file contents
    testResults.xml
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from the build log:
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00:04:22,124 [master>publish>publish-nunit-test-results>publish-report-tests-nunit@B-W3-64-DN30:8811] WARN - Processing resource d:\trunk\nunit\non-prod\test\unit\dotnet\reports\testResults.xml failed.
java.lang.RuntimeException: org.dom4j.DocumentException: Error on line 398 of document : Character reference "&#x0" is an invalid XML character. Nested exception: Character reference "&#x0" is an invalid XML character.
at com.pmease.quickbuild.bootstrap.BootstrapUtils.wrapAsUnchecked(BootstrapUtils.java:50)
at com.pmease.quickbuild.util.ExceptionUtils.wrapAsUnchecked(ExceptionUtils.java:83)
at com.pmease.quickbuild.plugin.report.engine.util.XMLHelper.readXML(XMLHelper.java:221)
at com.pmease.quickbuild.plugin.report.engine.util.XMLHelper.readXML(XMLHelper.java:238)
at com.pmease.quickbuild.plugin.report.engine.generator.reader.XMLResourceReader.read(XMLResourceReader.java:37)
at com.pmease.quickbuild.plugin.report.engine.generator.reader.XMLResourceReader.read(XMLResourceReader.java:1)
at com.pmease.quickbuild.plugin.report.engine.generator.xpath.XPathProcessor.processResource(XPathProcessor.java:64)
at com.pmease.quickbuild.plugin.report.engine.generator.AbstractProcessor.doExecute(AbstractProcessor.java:77)
at com.pmease.quickbuild.plugin.report.engine.generator.GenerateAction.execute(GenerateAction.java:37)
at com.pmease.quickbuild.plugin.report.engine.generator.AbstractGenerator.doExecute(AbstractGenerator.java:38)
at com.pmease.quickbuild.plugin.report.engine.generator.GenerateAction.execute(GenerateAction.java:37)
at com.pmease.quickbuild.plugin.report.engine.generator.DefaultGenerator.generate(DefaultGenerator.java:36)
at com.pmease.quickbuild.plugin.report.engine.contribution.publisher.AbstractPublisher.run(AbstractPublisher.java:139)
at com.pmease.quickbuild.plugin.report.nunit.NUnitPublisher$$EnhancerByCGLIB$$ed337ed2.CGLIB$run$23(<generated>)
at com.pmease.quickbuild.plugin.report.nunit.NUnitPublisher$$EnhancerByCGLIB$$ed337ed2$$FastClassByCGLIB$$31725485.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:215)
at com.pmease.quickbuild.DefaultScriptEngine$Interpolator.intercept(DefaultScriptEngine.java:273)
at com.pmease.quickbuild.plugin.report.nunit.NUnitPublisher$$EnhancerByCGLIB$$ed337ed2.run(<generated>)
at com.pmease.quickbuild.stepsupport.Step.execute(Step.java:455)
at com.pmease.quickbuild.stepsupport.StepJob.execute(StepJob.java:42)
at com.pmease.quickbuild.grid.GridJob.run(GridJob.java:122)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.dom4j.DocumentException: Error on line 398 of document : Character reference "&#x0" is an invalid XML character. Nested exception: Character reference "&#x0" is an invalid XML character.
at org.dom4j.io.SAXReader.read(SAXReader.java:482)
at org.dom4j.io.SAXReader.read(SAXReader.java:343)
at com.pmease.quickbuild.plugin.report.engine.util.XMLHelper.readXML(XMLHelper.java:219)
... 19 more
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Although the processing was not executed, the publish step didn't fail. This leaded to the unfavorable situation, that the build was green although there have been test failures!