PrusaSlicer 2.9.4 does not start when a 3MF file is passed as a command‑line argument
Hello,
I have found a reproducible issue in PrusaSlicer 2.9.4 on Windows. The slicer does not start at all when a 3MF file is passed as a command‑line argument, even if the file was created directly by PrusaSlicer.
How to reproduce (no external software needed):
Open PrusaSlicer 2.9.4
Load any STL
Use “File → Save Project As…”
Save the project as test.3mf
Close PrusaSlicer completely
In a Windows terminal, run something like:
"C:\Program Files\PrusaSlicer\prusa-slicer.exe" "D:\path\to\test.3mf"
Observed result:
PrusaSlicer does not start at all. No error message, no window, no log. The same file opens correctly if PrusaSlicer is launched first and then opened manually through the menu.
What works:
Launching PrusaSlicer without arguments
Drag and drop of the 3MF file
Opening the 3MF file through the File menu
Passing the same 3MF file to QidiSlicer (which starts correctly)
Conclusion:
It seems that PrusaSlicer 2.9.4 cannot start when a 3MF file is provided as a command‑line argument, even when the file was generated by PrusaSlicer itself.
Thanks in advance for any confirmation or information.