Perimeter modifier causes slicing to fail with "infill failed" when using Lightning infill

[spasecookee]

Description of the bug

I have a model that slices fine with Lightning infill when I do not have a modifier on part of the model to increase the number of perimeters on a very small part of the model. Additionally, if I add the modifier, and change from Lightning infill to support cubic, the model also slices fine. Increasing the overall number of perimeters and using Lightning, also works, although inefficient.

SystemInfo.txt

Project file & How to reproduce

There are 2 copies of my model on the build plate, one hidden one not. The copy with the problem has a Generic-Cylinder modifier to set the perimeters of the "spike" to 3. The rest of the model is 2 perimeters. you'll also note that the paint-on supports in this copy do not generate during slicing.

The other copy is just to show that it slices fine with lightning and 3 perimeters overall. The paint-on supports also work properly.

Hide one/show model or the other to see the difference. To get the first model to slice, change to support cubic infill, or delete the "Generic-Cylinder" modifier.

In the zip file, I've also included the project's original models (3MF files, not STLs), including an "old version" that did not exhibit this issue.

Airscape Cannister Lid Project Problems.zip

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.6.0-alpha5+win64

Operating system

Windows 10x64

Printer model

Not relevent

[kubispe1]

Ok thanks, I let this issue also open but please communicate details there.
#10055
We have it on our list already...

[kubispe1]

We fixed the related Gitthub issue. I also quickly test this one with PS 2.6.0-alpha5+266 and seems to me, that everything is fine.
@spasecookee Can you check after 2.6.0-alpha6 for case.
I am closing the issue.
Thanks