`product` fails with nested Devices

[tim-tx]

The following input fails with the error reported below.

PartType promoter;

promoter I14018(.SEQUENCE("tacataggcgagtactctgttatgg"));

Device fproms(+I14018, +I14018);
Device heirarchical(fproms, promoter);
product(heirarchical);

Error:

org.cidarlab.eugene.exception.EugeneException: org.cidarlab.minieugene.dom.Component cannot be cast to org.cidarlab.minieugene.dom.ComponentType
at org.cidarlab.eugene.interp.Interp.productPrimitiveDevice(Interp.java:959)
at org.cidarlab.eugene.interp.Interp.productCompositeDevice(Interp.java:843)
at org.cidarlab.eugene.interp.Interp.product(Interp.java:695)
at org.cidarlab.eugene.parser.EugeneParser.built_in_function(EugeneParser.java:13014)
at org.cidarlab.eugene.parser.EugeneParser.statement(EugeneParser.java:1600)
at org.cidarlab.eugene.parser.EugeneParser.prog(EugeneParser.java:1204)
at org.cidarlab.eugene.Eugene.executeScript(Eugene.java:283)