Uses of the ExternalArray, ExternalDictionary, and ExternalSet subclasses of the ExternalCollection class are not supported by the JADE C# exposure, and are excluded from the generated C#. In earlier releases, uses of these classes were generated and the C# compile failed.
The C# Exposure Wizard now ignores uses of these classes in the list of features that can be exposed (for example, a property reference).
You must manually alter any existing C# exposures that include such features, to exclude the exposed feature.