Grabbed 5.9.0, model won't slice (5.8.1 sliced it fine)

[MoFoQ]

Cura Version

5.9/0

Operating System

Ubuntu

Printer

Ender 3 Pro

Name abnormal settings

No response

Describe model location

No response

Describe your model

https://www.thingiverse.com/thing:6793493 (slices fine in 5.8.1)

Add your .zip here ⬇️

Box.stl was opened (using ctrl-O and selecting it) then went immediately to "slice"
Cura gives a generic "slicing failed" error; nothing in the console that would explain it (since I invoke the AppImage from command line)

It would be nice to get a better/descriptive error message.

[GregValiant]

Thanks for the report.
My printer is an Ender 3 Pro and using my profiles I don't have a problem slicing any of the files.
Load the problem file in Cura and use the "File | Save Project" command. Open the folder and zip the 3mf project file. Post the zip folder here and maybe there will be a clue as to what is happening.

[HellAholic]

There is also another option added with 5.9.0 release that includes the project file and the logs in a package, you can go to Help > Export package for technical support, creates a 3mf project file + logs and you can make a zip out of that and send it over.

[MoFoQ]

export-20241122-212158.3mf.zip

ironically, github doesn't like .3mf files even though it's actually a zip file 😆

[GregValiant]

Changing from the "Chep" profile to the "Standard" profile allowed it to slice for me.
Rotating the model 30° also allowed it to slice with the CHEP profile.

I'm placing my money on "Alternate Extra Wall".

[MoFoQ]

Changing from the "Chep" profile to the "Standard" profile allowed it to slice for me. Rotating the model 30° also allowed it to slice with the CHEP profile.

I'm placing my money on "Alternate Extra Wall".

Bingo!

Fascinating since 5.8.1 seems to not have a problem with it 🤔

now I wonder why that is 🤔 🤔
Could it be 5.8.1 just doesn't do alternate extra wall calculations (either by logical determination or because code bug)? 🤔 🤔 🤔

(on a sidenote, I already printed it via the output from 5.8.1 and with no supports and it turned out amazing)

[GregValiant]

There was a problem with infill % dropping to 0 when walls were close together. The fix for that was applied in 5.9.0 and this might be an "unexpected consequence".

@HellAholic may take a look.