Can't add new files to existing OrcaSlicer instance #11

New Issue

MrUnknownDE · 2026-04-05T16:18:08+02:00

MrUnknownDE commented

2026-04-05 16:18:08 +02:00

Originally created by @Bupher on 4/4/2026

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.2

Operating System (OS)

Windows

OS Version

Windows 11 25H2

Additional system information

No response

Printer

Bambu P1S - Lan Mode

How to reproduce

Go to Settings - Preferences
Ensure that "Allow only one OrcaSlicer instance" is checked
Close OrcaSlicer
Drag and drop a 3d model file (stl/step) onto the OrcaSlicer shortcut (or use the export to slicer option in fusion)
Repeat step 4 with a different stl/step file

Actual results

One instance of OrcaSlicer opens with the first model file
Nothing

Expected results

One instance of OrcaSlicer opens with the first model file.
The second model file is added to the existing instance of OrcaSlicer

Project file & Debug log uploads

log.zip

20260403_Instance_Bug_Report.zip

Checklist of files to include

Log file
Project file

Anything else?

This behavior (adding additional files to the existing instance) was normal behavior for 2.3.1. This changed when I updated to 2.3.2.

I use this feature to export additional files from my modeling software (fusion 360) directly to OrcaSlicer. Like if I am making multiple configurations of the same part, it lets me not save each individual one.

*Originally created by @Bupher on 4/4/2026* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.2 ### Operating System (OS) Windows ### OS Version Windows 11 25H2 ### Additional system information _No response_ ### Printer Bambu P1S - Lan Mode ### How to reproduce 1. Go to Settings - Preferences 2. Ensure that "Allow only one OrcaSlicer instance" is checked 3. Close OrcaSlicer 4. Drag and drop a 3d model file (stl/step) onto the OrcaSlicer shortcut (or use the export to slicer option in fusion) 5. Repeat step 4 with a different stl/step file ### Actual results 4. One instance of OrcaSlicer opens with the first model file 5. Nothing ### Expected results 4. One instance of OrcaSlicer opens with the first model file. 5. The second model file is added to the existing instance of OrcaSlicer ### Project file & Debug log uploads [log.zip](https://github.com/user-attachments/files/26475448/log.zip) [20260403_Instance_Bug_Report.zip](https://github.com/user-attachments/files/26475449/20260403_Instance_Bug_Report.zip) ### Checklist of files to include - [x] Log file - [x] Project file ### Anything else? This behavior (adding additional files to the existing instance) was normal behavior for 2.3.1. This changed when I updated to 2.3.2. I use this feature to export additional files from my modeling software (fusion 360) directly to OrcaSlicer. Like if I am making multiple configurations of the same part, it lets me not save each individual one.

MrUnknownDE added the bug bug bug bug labels 2026-04-05 16:18:08 +02:00

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Reference: github/OrcaSlicer#11