I am using an Ipad 5, Mavic 2 Pro with standard Mavic controller. I have used DD many times. In the last few months I have planned my flights, gone into the field to fly, the plan has passed the flight checks and commences to initialise and then nothing. Sometimes I get an error message about a corner waypoint or way points being too close together but that is nonsense. I am doing nothing different than I have before. I have flown well over 100 flights with this set-up. Problems only recently with 50% of flights having this problem. I have uninstalled and reloaded all software etc etc etc. No change. Any suggestions?