Following up for anyone with this weird issue with the settings not being saved…
I had this today - just starting to play with Estlcam and this was driving me nuts.
Windows 11 on a laptop - whereas on my desktop it was working fine. Everything you configure under Setup > Basic Settings or Setup > CNC Programs was forgotten each time the program loaded.
Turned out when I first installed it I had then uninstalled it and reinstalled it. Don’t ask why - doesn’t really matter! But the uninstall does not delete the c:\ProgramData\Estlcam folder or its contents. When it’s reinstalled it seems to lose the ability to update that folder. Hence it reads the settings file there, but doesn’t save changes back to it.
Solution : Uninstall. Delete the c:\ProgramData\Estlcam folder. Reinstall.
Job done and working great now!