Import error on Mac (Blender version 4.5.0)

[wangaustin]

Hello, running into an issue with the import when trying to use the plugin to import a 3MF file. I've provided the system and Blender info below. Please let me know if there are things I'm missing or if I can help debug it further. Thank you.

System: Apple M1 Max

Blender version: 4.5.0

Date: 2025-07-14 17:45
Hash: 8cb6b388974a
Branch: blender-v4.5 -release

Python: TypeError: Import3MF.__init__() takes 1 positional argument but 2 were given

[thesamrooney]

Good timing, I just ran into the same issue on Ubuntu.

[alterniti]

Experiencing the same issue on Windows 11.

[EvilWatermelon]

Same on Debian 12

[carmonac]

+1

[jun1chiro]

+1, Win10 Steam version 4.5.1 LTS

[finnbuster]

+1 on mac

[5ch4um1]

looks like the changes here will fix it: fba4e6d

[HWiese1980]

Yeah, same here on Windows 11, Blender 4.5.1 LTS

[sodacat3120]

我也是！me too win11 blender4.5

[yoursinger]

looks like the changes here will fix it: fba4e6d

感谢，我尝试之后这个方法是有效的，但是导出的3mf文件在拓竹切片软件中尺寸很大，需要将export_3mf.py脚本中的global_scale改为0.001后正常。
Thanks,I tried this method and it worked, but the exported 3mf file was very large in Bambu Lab's slicing software. It became normal after changing the global_scale in the export_3mf.py script to 0.001.

[dennywright]

Worked for me on MacOS 15.6.1 (24G90)

[ntroutman]

This is fixed by several pull requests #80 #78