Cura 3.3.1 on Mac - unable to open project file

[MarathonMann 0]

Hi, I am using Cura 3.3.1 on a Mac and overall it works very well and produces brilliant prints.    However, I am able to save a "project" file but then I am unable to open it.  Strange, the option to open a project simply does not appear in the menu and I can't open it as a "file".  Any ideas?

[ahoeben 1,886]

You open projects with the same File -> Open... command you use for opening meshes.

 

When you open a project, Cura asks if you want to open it as (a collection of) models, or as a project.

 

Note there’s a preference in General preferences that may suppress the aforementioned question.

[MarathonMann 0]

Thank you.  I tried that and found  my project files were greyed-out in the list, implying they weren't in a supported format.  When I looked closely I found they had not been given the .3mf extension!  I have to manually put the .3mf extension at the end of the project files I save, then it works.

 

At least I can save and open projects now so thank you.