ArduPIlot UAV Log Viewer breaks on Arduplane 4.3

The UAV Log viewer doesn’t seem to be able to handle logs created with 4.3 or higher (tried with 4.3.0 and 4.3.1) when running on Safari 16.0 and Google Chrome 106.0.5249.119 and Microsoft Edge Version 107.0.1418.24 (Official build) (64-bit). I get the error:

An error occurred while rendering. Rendering has stopped.

DeveloperError: normalized result is not a number

And if I click “more” I get

DeveloperError: normalized result is not a number

at new i (
at l.normalize (
at Yd (
at Hd.computeEllipsePositions (
at Xf (
at Kf.get (
at Rie.add (
at Nie.add (
at aoe._insertUpdaterIntoBatch (

I have tried older logs that worked in the past and they load fine. Specifically I tried 4.2.3 and it works.
This is an example of a log that throws the error.

Just for data sake I opened it in MavExplorer and it didn’t cause me any issues.

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Thanks @Allister, any chance you can tell me the airspeed at takeoff and landing?

Loads fine in Mission Planner latest beta as well.

Here is the portion in AUTO mode, which I think is what you’re wanting:

Looks like you accelerate from 5 m/s (headwind, likely) to 15-17 m/s on takeoff and then 14-15 m/s just before landing in what appears to be a 6 m/s headwind.

The peak in the early part of the flight is 22.83 m/s.

Here is the full airspeed sensor graph:

Thanks @Yuri_Rage , if it’s not too much to ask could you also show altitude, so I can see what the speed is when it leaves the ground and lands? Oh - I have a LIDAR, so if you know the metric for LIDAR height that would be even better.

I’ve just put wheels back on the Binary, so what I am trying to do is figure out my takeoff and landings speeds so I can set the parameters for auto takeoff/landing which I really want to try.

[FYI - like mavexplorer, Mission Planner has never been able to load/view logs for me on my Mac - hence I usually use]

I thought I recalled you were a Mac guy, which I know can be frustrating when it comes to GCS options. Here’s the LIDAR data overlayed with airspeed:

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