1. The parameter is sortBy since Ditto 1.0
2. The notice for 1.0.2 clearly stated that that feature was compromised in that version.
3. That feature has been repaired in the next version.
I posted that notice in a forum thread announcing the impending release of Ditto 1.0.2. I must have forgotten to include that in the download repository when I posted it.
As for the next version, it is not yet finished but a beta should be out soon.