Crash while slicing - XL 5H with imported multi-color 3mf

[blillesand]

Description of the bug

Imported 3mf file that was purchased from Cobotech via Cults 3D. Prusaslicer 2.9.0 crashes when slicing this file (works fine on 2.8)

Project file & How to reproduce

1. Import 3mf file (Cobotech Articulated Turkey Chef, purchased on Cults 3d)
2. Slice

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

PrusaSlicer-2.9.0-alpha1-win64-202411202012

Operating system

Windows 11

Printer model

Prusa XL 5H

[Jan-Soustruznik]

Hello @blillesand,Could you please share your 3MF file so we can investigate the crash? Thank you, and have a great day!

[BillC58]

I have this crash too. Here is my .3MF file.

2024 Reindeer XL trees.zip

[themanyone]

I have this crash too. Here is my .3MF file.

2024 Reindeer XL trees.zip

Testing with [debug] semver.c 2.9.0-alpha1 = 2.9.0, alpha1 (null) (git) shows some issue with colored_polygons being empty.

prusa-slicer: /home/k/Downloads/src/Prusa/src/libslic3r/MultiMaterialSegmentation.cpp:1809: Slic3r::segmentation_by_painting(const PrintObject&, const std::function<ModelVolumeFacetsInfo(const ModelVolume&)>&, size_t, float, float, IncludeTopAndBottomLayers, const std::function<void()>&)::<lambda(const tbb::detail::d1::blocked_range<long unsigned int>&)>: Assertion `!colored_polygons.empty()' failed.

If all you need is the model, the .3mf file may be opened with GUI programs like Ark and File Archiver. From there, you can export extract the model, sans configurations.

[lukasmatena]

Thanks for the project file, it helped. The issue should be fixed in 2.9.0. Closing.