Tool changer (Stealthchanger) no longer usable #380

New Issue

MrUnknownDE · 2026-04-05T16:20:26+02:00

MrUnknownDE commented

2026-04-05 16:20:26 +02:00

Originally created by @liquidbase on 3/9/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2 RC2

Operating System (OS)

Linux

OS Version

Linux Mint 22.3

Additional system information

Using Flatpak

Printer

Voron 2.4 350 Stealthchanger

How to reproduce

Create a project with multiple tools
Use Wipetower as normal
Slice project

Actual results

Orca crashes at the moment when the wipe tower is to be created.

Expected results

Slices project, ready to send the project to the printer.

Project file & Debug log uploads

Project File: Harper2.3mf.zip

Log File: debug_Mon_Mar_09_20_15_59_2.log.0.zip

Checklist of files to include

Log file
Project file

Anything else?

Shell-Output:

/usr/include/c++/14.3.0/optional:482: constexpr const _Tp& std::_Optional_base_impl<_Tp, _Dp>::_M_get() const [with _Tp = Slic3r::WipeTowerData::WipeTowerMeshData; _Dp = std::_Optional_base<Slic3r::WipeTowerData::WipeTowerMeshData, false, false>]: Assertion 'this->_M_is_engaged()' failed.

*Originally created by @liquidbase on 3/9/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2 RC2 ### Operating System (OS) Linux ### OS Version Linux Mint 22.3 ### Additional system information Using Flatpak ### Printer Voron 2.4 350 Stealthchanger ### How to reproduce 1. Create a project with multiple tools 2. Use Wipetower as normal 3. Slice project ### Actual results Orca crashes at the moment when the wipe tower is to be created. ### Expected results Slices project, ready to send the project to the printer. ### Project file & Debug log uploads Project File: [Harper2.3mf.zip](https://github.com/user-attachments/files/25851760/Harper2.3mf.zip) Log File: [debug_Mon_Mar_09_20_15_59_2.log.0.zip](https://github.com/user-attachments/files/25851716/debug_Mon_Mar_09_20_15_59_2.log.0.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? Shell-Output: `/usr/include/c++/14.3.0/optional:482: constexpr const _Tp& std::_Optional_base_impl<_Tp, _Dp>::_M_get() const [with _Tp = Slic3r::WipeTowerData::WipeTowerMeshData; _Dp = std::_Optional_base<Slic3r::WipeTowerData::WipeTowerMeshData, false, false>]: Assertion 'this->_M_is_engaged()' failed.` <img width="1344" height="434" alt="Image" src="https://github.com/user-attachments/assets/d9a65d9e-bbb9-4fe7-bfc2-54fb5eec23d9" />

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Reference: github/OrcaSlicer#380