Pipeline debugging problem

[Maurice Naftalin]

Any attempt to debug into a ReferencePipeline method using
IntelliJ 12.0.3 produces an IncompatibleClassChangeError on
b77, with the message

"Class java.lang.invoke.ConstantCallSite does not implement
   the requested interface java.util.stream.Stream
   at foo.Bar.main(Bar.java:37)"

The same programs run (not in debug mode) without problems.
Might be an IntelliJ problem, obviously.

Maurice