I have 3 schemas, none of which have target namespaces. In Schema C I define an element "vagueElem" Schema B includes Schema C, and base Schema includes Schema B. Base Schema also includes Schema A, which defines its own element named "valueElem". This base schema defines a pipe-separated sequence of an element reference to "vagueElem"

I get the following error when I attempt to use this sequence as a root:

[info] - test_no_namespace_02 *** FAILED ***
[info] edu.illinois.ncsa.daffodil.exceptions.Abort: Invariant broken. should only be a SchemaComponent or a DFDLDefiningAnnotation
[info] edu.illinois.ncsa.daffodil.exceptions.Assert$.abort(Assert.scala:85)
[info] edu.illinois.ncsa.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:122)
[info] edu.illinois.ncsa.daffodil.dsom.Schema$$anonfun$noneOrOne$1.apply(SchemaComponent.scala:1154)
[info] edu.illinois.ncsa.daffodil.dsom.Schema$$anonfun$noneOrOne$1.apply(SchemaComponent.scala:1150)
[info] at edu.illinois.ncsa.daffodil.exceptions.Assert$.abort(Assert.scala:85)
[info] at edu.illinois.ncsa.daffodil.exceptions.Assert$.invariantFailed(Assert.scala:122)
[info] at edu.illinois.ncsa.daffodil.dsom.Schema$$anonfun$noneOrOne$1.apply(SchemaComponent.scala:1154)
[info] at edu.illinois.ncsa.daffodil.dsom.Schema$$anonfun$noneOrOne$1.apply(SchemaComponent.scala:1150)
[info] at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:233)
[info] at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:233)
[info] at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59)
[info] at scala.collection.immutable.List.foreach(List.scala:76)
[info] at scala.collection.TraversableLike$class.map(TraversableLike.scala:233)
[info] at scala.collection.immutable.List.map(List.scala:76)

The test is no_namespace_02 and uses the following files:

1. new file: daffodil-test/src/test/resources/edu/illinois/ncsa/daffodil/section06/namespaces/multi_A_05_nons.dfdl.xsd
2. new file: daffodil-test/src/test/resources/edu/illinois/ncsa/daffodil/section06/namespaces/multi_B_05_nons.dfdl.xsd
3. new file: daffodil-test/src/test/resources/edu/illinois/ncsa/daffodil/section06/namespaces/multi_C_05_nons.dfdl.xsd
4. new file: daffodil-test/src/test/resources/edu/illinois/ncsa/daffodil/section06/namespaces/multi_base_05_nons.dfdl.xsd
5. modified: daffodil-test/src/test/resources/edu/illinois/ncsa/daffodil/section06/namespaces/namespaces.tdml
6. modified: daffodil-test/src/test/scala-debug/edu/illinois/ncsa/daffodil/section06/namespaces/TestNamespacesDebug.scala
7. modified: daffodil-test/src/test/scala/edu/illinois/ncsa/daffodil/section06/namespaces/TestNamespaces.scala