Tried running VASSAL-3.3.3-SNAPSHOT-bug13014-d468953e-macosx.dmg
Looked to work fine until I found traits had disappeared in the Module Editor.
Steps taken:-
Opened my module, refreshed counters.
Did a save file and updated one of the saved scenarios with that save file.
Did some actions in the module. Did 1 UnDo.
Went to try edit traits in a prototype … the prototype was blank, as were others tried subsequently.