Updating bambu gcode from bambu studio to Orca yields slicing errors #1570

New Issue

MrUnknownDE · 2026-04-05T18:26:39+02:00

MrUnknownDE commented

2026-04-05 18:26:39 +02:00

Originally created by @WimVDK on 11/19/2025

Is there an existing issue for this problem?

I have searched the existing issues

OrcaSlicer Version

2.3.1

Operating System (OS)

Windows

OS Version

Win 11 Pro 24H2

Additional system information

No response

Printer

Bambu X1C

How to reproduce

Open bambu X1C profile in bambu studio
Copy over all the updated machine gcode (like the start gcode among others) dated 20251031 to orca printer profile
Slice

Actual results

Error:

Failed to generate G-code for invalid custom G-code.

change_filament_gcode Parsing error at line 15: Referencing a vector variable with a negative index

[if long_retractions_when_cut [previous_extruder]}

machine_start_gcode Parsing error at line 87: Not a variable name

M620.1 E F(flush_volumetric_speeds [initial_no_support_extruder]/2.4053*60)

T[flush_temperatures [initial_no_support_extruder]}

Please check the custom G-code or use the default custom G-code.

Expected results

Updated gcode to work

Project file & Debug log uploads

gcode-error.zip

Checklist of files to include

Log file
Project file

Anything else?

No response

*Originally created by @WimVDK on 11/19/2025* ### Is there an existing issue for this problem? - [x] I have searched the existing issues ### OrcaSlicer Version 2.3.1 ### Operating System (OS) Windows ### OS Version Win 11 Pro 24H2 ### Additional system information _No response_ ### Printer Bambu X1C ### How to reproduce 1. Open bambu X1C profile in bambu studio 2. Copy over all the updated machine gcode (like the start gcode among others) dated 20251031 to orca printer profile 4. Slice ### Actual results Error: Failed to generate G-code for invalid custom G-code. change_filament_gcode Parsing error at line 15: Referencing a vector variable with a negative index [if long_retractions_when_cut [previous_extruder]} --- machine_start_gcode Parsing error at line 87: Not a variable name M620.1 E F(flush_volumetric_speeds [initial_no_support_extruder]/2.4053*60) T[flush_temperatures [initial_no_support_extruder]} Please check the custom G-code or use the default custom G-code. ### Expected results Updated gcode to work ### Project file & Debug log uploads [gcode-error.zip](https://github.com/user-attachments/files/23638296/gcode-error.zip) ### Checklist of files to include - [ ] Log file - [x] Project file ### Anything else? _No response_

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Reference: github/OrcaSlicer#1570