I have a p4 standard and when i went to fly the the other day the motors would not start. Everything appeared to be ok with drone and remote as there were no errors on the screen and firmware showed up to date. I am outside of a airport fly zone by about a 1/2 mile, Would this be the cause as i have had fly with caution alerts in the past when starting up but everything went ok. Could it be a bad stick,but i think i would have an error message if it was? Has anyone had this problem.