Command line export doesn't work in Windows 10 for Godot 3.1.2 due to error code 12

[2shady4u]

Godot version:

3.1.2 (the official one)

OS/device including version:

Windows 10

Issue description:

Exporting a Godot project (even a brand-new one) doesn't work in the command line as it returns an error:

Steps to reproduce:

• Make a new Godot Project in 3.1.2
• Create some node (in my case I created a Node2D) and configure it to be the main scene.
• Make an export preset for windows: "Windows Desktop"
• Run following command in powershell (or any other cmd tool):
  godot -e -v --export-debug "Windows Desktop" build/test.exe
• Exporting fails due to error code 12

Downgrade to Godot v3.1.1 and do the exact same steps. The export completes successfully without any issues... as seen here:

[akien-mga]

Tested on Linux, it seems to work fine there:

~/tmp/godot/stable/3.1/Godot_v3.1.2-stable_x11.64 -e -v --export-debug "Linux/X11" build/test.x86_64

Note that I created the build folder beforehand. If I don't and the directory is missing, I get:

ERROR: _fs_changed: Project export failed with error code 9.
   At: editor/editor_node.cpp:495.

Maybe that's your issue?

It seems to fail the same in 3.1.1 so that wouldn't be a regression.
Edit: Well maybe not since you say it works for you with 3.1.1.

I'll try to boot up Windows 10 to check if I can reproduce it with PowerShell.

[2shady4u]

I also get error code 9 when I don't make the folder beforehand.
(in both 3.1.1 and 3.1.2)

However, the error code 12 only appears when I try to export with 3.1.2 in Windows 10.
I didnt try this yet with Linux or MacOsX so I have no idea if those OS' have the same issue...

[2shady4u]

So on Ubuntu LTS (18), I get following behaviour:

Godot v3.1.1, exporting to Windows:

Godot v3.1.2, exporting to Windows:

So it works on Linux (except for the memory leak, but whatever)

[garyritchie]

Export path seems relative to project location.

Example: godot -v --export "Windows Desktop" ../BUILD/LTG.exe --path ENGINE/

This works for me where I have ENGINE/project.godot and BUILD/ within my repo. Tell all your friends and save 'em some frustration.

[2shady4u]

@garyritchie
Thanks that did the trick!

Also shout-out to Calinou for adding this to the --help command (#34589) to spare future generations from running into this issue.

Closing this...