Creating a physical printer silently fails when the printer name contains invalid path characters

[NameOfTheDragon]

What happened?

When creating a physical printer, with name "Voron V2/1360", all seems to work, except that the next time the program is loaded, the printer is gone.

I believe the "/" character is causing a filesystem error when attempting to save the configuration file under physical_printers.

There is no warning that anything is wrong and there is no error message. The printer just mysteriously vanishes the next time the program is started.

Project file & How to reproduce

• Create a physical printer named "Voron V2/1360" - this apparently succeeds and the printer can be used.
• Open the configuration folder under Help -> Show Configuration Folder
  It will be observed that the physical printer ini file has not been created.
• Close and restart SuperSlicer
  It will be observed that the physical printer is gone.

Version

2.5.59.3

Operating system

Windows 11

Printer model

Voron 2.4/350 with Stealthburner and Clockwork 2

[supermerill]

In the 2.7, there is some checks about that.
I'll see if I can find some times to port that back to 2.5

[Adams-Scott]

I was having the same issue in 2.9. I was naming my physical printer ".6". If I named it "Prusa 6" it was fine. I'm guessing it had to do with the decimal.