Sorry you found the jreceiver install tricky - I think you'll find it worth the pain though.

By the looks of it you've already set the "root" value in <http-server> in trio.xml. Hopefully dropping the final "/docs" bit should work: root="/usr/local/trio". If that doesn't work, try removing the 1st forward slash: root="usr/local/trio".

Let me know how you get on.

Cheers
Paul