I went flying today and wanted to go straight up to get some footage of my grandparents property. Once I hit around 500 ft high the Vision App read "control signal lost" and the return to home feature kicked in. The wind knocked it off course a little as it was going down and at about 100 feet I toggled the S1 switch and was able to regain control and land safely. Why did this happen? My limits on height are 1200 so I didnt go passed my limits. I do not have the most recently released app on my iphone because like others the app kept crashing on me. I uninstalled it and reinstalled the previous version which I had backed up on my itunes. It just scared the ever living hell out of me.