Demos Broken

[tccountus]

I think the demos are broken, it seems to cannot open lua files:

[ERROR] 2026-06-02_22-36-39 cannot open /home/martin/CPP/Overload/proj/Showroom/Assets/Teleport: No such file or directory
[ERROR] 2026-06-02_22-36-39 cannot open /home/martin/CPP/Overload/proj/Showroom/Assets/Teleport: No such file or directory
[ERROR] 2026-06-02_22-36-39 cannot open /home/martin/CPP/Overload/proj/Showroom/Assets/SponzaExplorer: No such file or directory
[ERROR] 2026-06-02_22-36-39 cannot open /home/martin/CPP/Overload/proj/Showroom/Assets/SceneNavigator: No such file or directory

[adriengivry]

It seems like you might have a version mismatch. Which Overload version are you using, and which version of the demo are you using?

[tccountus]

The newest bleeding-edge from github, I built the engine from sources

[adriengivry]

Odd, demos work perfectly fine for me. If you get a chance to investigate, I'd love to hear your thoughts

[tccountus]

Do you use the windows build, or the linux build?
The problem could be in LuaScriptEngine.cpp:

const auto scriptPath = m_context.projectAssetsPath / p_toAdd.name;

if (!RegisterBehaviour(*m_context.luaState, p_toAdd, scriptPath.string()))
{
	++m_context.errorCount;
}

When m_context.projectAssetsPath is pointing to the proj/Cargo/Assets dir, instead of the script dir, this may be the problem. Also, the file extension is missing

[adriengivry]

I'm using the Linux build, but some other contributors (@Gopmyc) are on Windows, and it seems to be working fine for them as well.

I just cloned the main of Overload and Showroom, opened the Showroom project, clicked "Yes", opened a scene, and hit play, and everything is working fine. Did you make sure to click "Yes" when prompted to migrate the scripts folder?

[tccountus]

I did not get the prompt... The Editor didn't let me open the project dir, I had to use OvEditor <path>

Thanks for this hint!

[tccountus]

I am using KDE, maybe we should add support for kdialog

[adriengivry]

I'm using KDE as well, but we use zenity for dialogs. We should add a mention somewhere in the README, there is an issue for that already:
#790

Try installing zenity, and restarting the engine. That should fix it.

If you want to collaborate as well, feel free to a create a PR adding a disclaimer about zenity requirement on Linux!

Maybe also logging an error on startup if zenity is not found would be helpful.

[tccountus]

I guess the cargo script has still some errors:

[ERROR] 2026-06-03_19-04-39 ...j/Cargo-main/Assets/Scripts/Controller_FPSController.lua:30: attempt to call a nil value (method 'FindActorByName')
stack traceback:
...j/Cargo-main/Assets/Scripts/Controller_FPSController.lua:30: in function <...j/Cargo-main/Assets/Scripts/Controller_FPSController.lua:29>
[ERROR] 2026-06-03_19-04-39 ...Cargo-main/Assets/Scripts/Gameplay_EnigmaDoorTrigger.lua:14: attempt to call a nil value (method 'FindActorByName')
stack traceback:
...Cargo-main/Assets/Scripts/Gameplay_EnigmaDoorTrigger.lua:14: in function <...Cargo-main/Assets/Scripts/Gameplay_EnigmaDoorTrigger.lua:13>

[adriengivry]

Did you build Overload with GCC or Clang?

[tccountus]

gcc

[adriengivry]

Right. Overload requires Clang, as Lua/Sol2 doesn't work well with GCC at the moment.
See https://github.com/Overload-Technologies/Overload#building-from-sources

For reference: #613

[tccountus]

seemed to fix it, thanks!