The defined artifact is not an archetype?

I'm using maven-archetype-plugin from http://people.apache.org/~rafale/staging-repo/maven-archetype-plugin/.

I'm stuck trying to create a basic archetype. I created a POM with packaging=maven-archetype and build extension org.apache.maven.archetype:archetype-packaging:2.0-alpha-1. I put the resources from https://svn.apache.org/repos/asf/maven/archetype/tags/maven-archetype-2.0-alpha-1/archetype-common/src/test/archetypes/basic-1.0 under src/main/resources and managed to package and install the archetype.

However, when I try to generate a new project from the archetype, I get:
-> The defined artifact is not an archetype

I see in the code that you first try to parse META-INF/maven/archetype-metadata.xml, and then META-INF/maven/archetype.xml. I assume that my archetype-metadata.xml is correct, but I'm not sure. I don't need to have an archetype.xml, I guess...

See attachment for sample project, and full stack trace below:

E:\>mvn -e archetype:create -DarchetypeCatalog=local
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'archetype'.
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Default Project
[INFO] task-segment: [archetype:create] (aggregator-style)
[INFO] ------------------------------------------------------------------------
[INFO] Preparing archetype:create
[INFO] No goals needed for project - skipping
[INFO] Setting property: classpath.resource.loader.class => 'org.codehaus.plexus
.velocity.ContextClassLoaderResourceLoader'.
[INFO] Setting property: velocimacro.messages.on => 'false'.
[INFO] Setting property: resource.loader => 'classpath'.
[INFO] Setting property: resource.manager.logwhenfound => 'false'.
[INFO] [archetype:create]
Choose archetype:
1: local -> ebit-test-plugin (ebit-test-plugin)
2: local -> ebit-test-archetype (ebit-test-archetype)
Choose a number: (1/2): 2
[INFO] ------------------------------------------------------------------------
[DEBUG] Can not load old archetype
java.io.IOException: The META-INF/maven/archetype.xml descriptor cannot be found.
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.getOldArchetypeDescriptorReader(DefaultArchetypeArtifactManager.java:589)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.loadOldArchetypeDescriptor(DefaultArchetypeArtifactManager.java:542)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isOldArchetype(DefaultArchetypeArtifactManager.java:506)
at org.apache.maven.archetype.common.DefaultArchetypeArtifactManager.isOldArchetype(DefaultArchetypeArtifactManager.java:271)
at org.apache.maven.archetype.ui.DefaultArchetypeGenerationConfigurator.configureArchetype(DefaultArchetypeGenerationConfigurator.java:125)
at org.apache.maven.archetype.mojos.CreateProjectFromArchetypeMojo.execute(CreateProjectFromArchetypeMojo.java:167)
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] The defined artifact is not an archetype
[INFO] ------------------------------------------------------------------------
[DEBUG] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: The defined artifact is not an archetype
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:564)
Caused by: org.apache.maven.plugin.MojoExecutionException: The defined artifact is not an archetype
at org.apache.maven.archetype.mojos.CreateProjectFromArchetypeMojo.execute(CreateProjectFromArchetypeMojo.java:173)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:447)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
... 16 more
Caused by: org.apache.maven.archetype.exception.ArchetypeGenerationConfiguration
Failure: The defined artifact is not an archetype
at org.apache.maven.archetype.ui.DefaultArchetypeGenerationConfigurator.configureArchetype(DefaultArchetypeGenerationConfigurator.java:139)
at org.apache.maven.archetype.mojos.CreateProjectFromArchetypeMojo.execute(CreateProjectFromArchetypeMojo.java:167)
... 18 more
[INFO] ------------------------------------------------------------------------