MagFit - MavExplorer on Windows

Bill-B · August 23, 2021, 9:36pm

Hi,
I’m getting the following error when trying to run the magfit module in MAVExplorer on Windows 7. Is this a problem I can fix? Thanks.

[41192] Failed to execute script MAVExplorer
Traceback (most recent call last):
File “MAVExplorer.py”, line 969, in
File “C:\hostedtoolcache\windows\Python\3.8.10\x64\Lib\site-packages\PyInstaller\hooks\rthooks\pyi_rth_multiprocessing.py”, line 55, in _freeze_support
File “multiprocessing\spawn.py”, line 109, in spawn_main
OSError: [Errno 9] Bad file descriptor

stephendade · August 24, 2021, 5:58am

That’s a bug in MAVProxy. Thanks for finding it - we’ll try to find a fix for it.

Hoehenarbeit · September 27, 2021, 11:35am

Getting the same error under Windows 10.

ERROR in command []: Can’t pickle <class ‘Struct’>: attribute lookup Struct on builtins failed
MAV> Traceback (most recent call last):
File “MAVExplorer.py”, line 969, in
File “C:\hostedtoolcache\windows\Python\3.8.10\x64\Lib\site-packages\PyInstaller\hooks\rthooks\pyi_rth_multiprocessing.py”, line 55, in _freeze_support
File “multiprocessing\spawn.py”, line 109, in spawn_main
OSError: [Errno 9] Bad file descriptor
[15016] Failed to execute script MAVExplorer

Any news on the fix? Works fine under Linux, just wanted to avoid switching OSes.

Daveemtb · October 5, 2021, 12:30pm

I’m having the same issue. Could really do with running the magfit module and don’t have easy access to a Linux machine

stephendade · October 6, 2021, 9:53am

FYI, I’m currently working on a fix for this. Should be done in a week or so.

Joao_Marques · October 11, 2021, 12:19pm

Any news on the little fix?

Thank you!

stephendade · October 18, 2021, 5:47am

We now have a fix! Until the next official release of MAVProxy, you can download the developmental build from: https://github.com/ArduPilot/MAVProxy/suites/4079815721/artifacts/103812707

Hoehenarbeit · October 18, 2021, 6:20am

Now I get the error: ModuleNotFoundError: No module named ‘scipy’

I installed scipy using pip in python3.9, but doesn´t seem to work.

stephendade · October 18, 2021, 10:32pm

Fixed now, try: https://github.com/ArduPilot/MAVProxy/suites/4089498484/artifacts/104175590

Bill-B · October 18, 2021, 11:16pm

It works for me now! Thanks for the fix Stephen.

Joao_Marques · October 20, 2021, 8:57am

The link you posted dont work!

Hoehenarbeit · October 21, 2021, 6:29am

Now it works perfectly, thanks!

stephendade · October 22, 2021, 6:06am

I’ve also uploaded it as MAVProxy 1.8.45 on ArduPilot firmware : /Tools/MAVProxy, for those having issues downloading from GitHub