Bamboo Specs publisher doesn't work on Windows

mvn archetype:generate -B ^
 -DarchetypeGroupId=com.atlassian.bamboo -DarchetypeArtifactId=bamboo-specs-archetype ^
 -DarchetypeVersion=6.0.2 ^
 -DgroupId=com.atlassian.bamboo -DartifactId=bamboo-specs-tutorial -Dversion=1.0.0-SNAPSHOT ^
 -Dpackage=tutorial -Dtemplate=minimal

cd bamboo-specs-tutorial

Caused by: java.lang.NoClassDefFoundError: tutorial\PlanSpec (wrong name: tutorial/PlanSpec)
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at com.atlassian.bamboo.specs.maven.sandbox.FileToBambooSpecsMapper.apply(FileToBambooSpecsMapper.java:35)
        at com.atlassian.bamboo.specs.maven.sandbox.FileToBambooSpecsMapper.apply(FileToBambooSpecsMapper.java:10)
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1374)
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708)
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499)
        at com.atlassian.bamboo.specs.maven.sandbox.SpecsRunner.runSpecsUnderLowPrivilege(SpecsRunner.java:38)
        at com.atlassian.bamboo.specs.maven.sandbox.SecureMethodInvoker$1.run(SecureMethodInvoker.java:47)
        at java.lang.Thread.run(Thread.java:745)
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException