2nd time its happened now and it seems to be linked to me upgrading various buildings to lvl 5...atm i have 11 farms 1 mill and 1 baker all showing as "asleep" this happened by itself and they are producing no output...again this only happens when im upgrading various buildings around them to lvl 5...iv tryed manualy setting them to "sleep" and restarting them,yet it switches back to "asleep"almost instantly!