'destroyed' object error

I was shifting some vaults around when this log came up

release-663 (x64)
Uncaught Error: Assertion Failed: calling set on destroyed object
Error: Assertion Failed: calling set on destroyed object
    at new Error (native)
    at Error.r (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:4:18375)
    at Object.n.assert (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:2:88)
    at y (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:5:16885)
    at p.default._.create.set (http://radiant/stonehearth/ui/root/js/libs/ember-1.8.1.min.js:8:25617)
    at http://radiant/stonehearth/ui/game/modes/zones_mode/farm/farm.js:20:27
    at c (http://radiant/stonehearth/ui/root/js/libs/jquery-1.10.2.min.js:4:26036)
    at Object.p.fireWith [as resolveWith] (http://radiant/stonehearth/ui/root/js/libs/jquery-1.10.2.min.js:4:26840)
    at i.(anonymous function) (http://radiant/stonehearth/ui/root/js/libs/jquery-1.10.2.min.js:4:27824)
    at foward_fn (http://radiant/radiant/js/radiant/object.js:144:22)