You didn’t say what version of KiCad this relates to . . . but, does any of this help ? (I know it’s about Schematics and you have an issue with PCB but the mechanism might be the same)
When a feature / bug fix is important, it can get copied from the unstable development version (7.99) of KiCad into the next stable release of KiCad (7.0.6). It turns out this is more of a bug fix than a new feature, since it is replacing an existing lock file elsewhere with a new lock file in the project directory.
Since I was also quite confused by the new error message in 7.0.6, I opened an issue to improve the message and suggest to the user that there may be a lock file incorrectly prese…
I am new to KiCAD and ise 7.0
The other i had a aoftware crash and next time i tried KiCAD again it came up with an error that my schematic was open already and should to load open again or quit.
How do you clear this rather annoying error banner ever seem you open eeschema.?