SoapUI Pro coverage problems - Representations and Node Coverage

I'm trying to improve the coverage of our test suite but am running into problems.

1) All of the response representations report 0% coverage -- the Message Content pane is empty in the coverage screens, which is I think the problem as adding assertions doesn't seem to change anything on the coverage

2) Node Assertions on the generated coverage report is 0% -- is this linked to the above?

Finally,

3) Generated HTML coverage report from our Jenkins build does not have any subreports linked into it, so detailed results can only be seen if the tests are run from ReadyAPI