I would like to add a DeicsOnze synth.
I can add it by right clicking on the track panel + clicking on "Add Synth->MESS->DeicsOnze".
If I try to add it via the "Edit" menu from the menu bar, there is no "MESS->DeicsOnze" menu after "Edit->Add Track->Add Synth".
My mistake. A fix has been applied to the SVN trunk.
Thanks for the report!
Tim.