Publisher was shipped with the wrong APPID
What's wrong: today's Tools update changed one file in the Publisher folder, steam_appid.txt.
┌───────────────────────────────────────────────┬─────────────────────────────┐
│ Tools copy │ steam_appid.txt │
├───────────────────────────────────────────────┼─────────────────────────────┤
│ Today's stable DayZ Tools (updated 06:25) │ 830640 (the DayZ Tools app) │
├───────────────────────────────────────────────┼─────────────────────────────┤
│ Experimental Tools, Tools 1.28, 1.28 hf3, 126 │ 221100 (DayZ) │
└───────────────────────────────────────────────┴─────────────────────────────┘