Strange UI Error Bug

UI ERROR BUG, not sure what else to say :confused:

ALPHA 13

develop-2720 (x64)
Uncaught TypeError: Cannot read property ‘appendChild’ of undefined
TypeError: Cannot read property ‘appendChild’ of undefined
at .widget._createHelper (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:4887:79) at null._createHelper (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:401:25) at .widget._mouseStart (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:4142:22)
at null._mouseStart (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:401:25)
at $.widget._mouseMove (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:938:11)
at null._mouseMove (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:401:25)
at HTMLDocument._mouseMoveDelegate (http://radiant/stonehearth/ui/root/js/libs/jquery-ui-1.10.3.js:910:16)
at HTMLDocument.jQuery.event.dispatch (http://radiant/stonehearth/ui/root/js/libs/jquery-1.10.2.js:5095:9)
at HTMLDocument.elemData.handle (http://radiant/stonehearth/ui/root/js/libs/jquery-1.10.2.js:4766:46)

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