develop-2697 (x64)
std::logic_error: 'invalid reference in native get_id'
stack traceback:
	[C]: ?
	[C]: in function 'get_id'
	stonehearth/lib/build_util.luac:204: in function 'pack_entity'
	...uction_progress/construction_progress_component.luac:65: in function 'save_to_template'
	stonehearth/lib/build_util.luac:71: in function 'save_entity_to_template'
	stonehearth/lib/build_util.luac:79: in function 'save_all_structures_to_template'
	stonehearth/lib/build_util.luac:79: in function 'fn'
	stonehearth/lib/build_util.luac:28: in function 'for_each_child'
	stonehearth/lib/build_util.luac:79: in function 'save_all_structures_to_template'
	stonehearth/lib/build_util.luac:79: in function 'fn'
	stonehearth/lib/build_util.luac:28: in function 'for_each_child'
	stonehearth/lib/build_util.luac:79: in function 'save_all_structures_to_template'
	stonehearth/lib/build_util.luac:160: in function 'save_template'
	stonehearth/call_handlers/build_call_handler.luac:10: in function <stonehearth/call_handlers/build_call_handler.luac:9>