Given the following code:

abstract class ScalaTreeTransformer[T, C <: whitebox.Context](val c: C) {
import c.universe._
...
}

class LuaTransformer[C <: whitebox.Context](c: C) extends ScalaTreeTransformerLuaNode,C {
import super.c.universe._ // <-- this line produces a compile error
...
}

The use of a super clause to select the 'c' identifier is a 'Stable Identifier' as defined in the grammar and in an import statement this should be allowable. I don't see why this should be an error. The message given:
Error(x,x) "Identifier given but 'super' found."