error message writing waypoints

I get an error message "upload wps failed Waypoint_Mav_Mission_E-something-something"

everything beyond the E is truncated. Using APM flight controller and APM 2.6 mission planner. I basically can't fly waypoint missions at the moment because I can't upload the flight plan

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –


  • I am facing an exactly similar problem ..
    I am unable to write waypoint file on my board
    Please help if you were able to tackle this issue
    I am using APM 2.8
  • i got same problem, and i find that problem is that i dont have set HOME POSITION :D so if some one will fix it by this, he can knock on hims head like i did :D

  • 300km

    I'm having a similar problem (APM2.6). I can write waypoints fine from my desktop computer and my old laptop, but a new laptop I bought just won't do it. I can connect, see live telemetry data, read WPs, just not write them to the APM.

  • I am also running APM 2.6 on a 3DR  Y6, with whatever firmware gets automatically updated.  I have noticed that when I read back the waypoint files that I have written to the APM from Mission Planner, the number of waypoints that gets written is almost random.  Today the Y6 seemed very confused.  All it had to do was fly to half a dozen waypoints, pause at each for five seconds, then fly home.  It had a hard time doing that.

  • Developer

    can someone post the mission file and what firmware they are using?

    • Michael,

      Sorry for the late reply!

      Please see attached the mission plan.

      after several retrries it writes ... if I am lucky.

      I am using APM 2.6, AP3.2, 3dr telemetry on 434Mhz with ECC is disabled, MP 1.3.17

      the second issue I am getting is with the log download:

      after getting/counting  all Bytes counting just restarts and no log flie is dumped on my HD.

      The workaround of loading AP3.0.3 downloading the log over USB and reloading AP3.2 is pretty long and cumbersome.

      I quit my day-job and devoted 24/7 to this so if I am not out testing/ flying I can provide you with any info you need.

      test grid final 2.txt

  • Hi Robert,

    This is verry similar to what I am getting. I am using the same confguration. Have you had any luck in solving this problem?



  • Did you find a solution to this? We have exactly the same problem.

    APM 2.6

    Firmware 3.03

    Mission Planner 1.3.5

    "upload wps failed WAYPOINT MAV_MISSION_ERROR"

    The tlog shows that after MSG 27 (hex) MISSION_ITEM you get a failed AF (MISSION_ACK).

This reply was deleted.


Jørn Ramnæs liked VIDEO LINK's profile
May 28
Mark Harrison left a comment on Moderators
"Wow, Ning2 looks really great on mobile. I had sort of drifted away as my browse-time went more on my phone, so this is great."
May 28
Hank Deucker left a comment on PIXHAWK
"I am sure most will say not again, Pixhawk telemetry. I do need help and all can be reassured that I have spent many hours scouring the net for useful information. I am not new at quadcopter flying, I started in 2012 and have progressed through many…"
May 28
Hank Deucker left a comment on PIXHAWK
"Tomorrow, I am thinking about the wording at the moment."
May 28