I'm working on 10.11.3 (El Capitan).
I flushed out Rockpool completely, reinstalled from the latest flotilla.pre and it is now working with that.
It doesn't however work with flotil.la/shipshape When I connect with this there are no inputs or
putputs showing.
Pictures ot the different connect screen for Rockpool local and for flotil.la/shipshape shown below.
Using local Rockpool
Using flotil.la/shipshape