Lock error trying to save a PCB - Software - KiCad.info Forums

(apologies if this is in the wrong category) I have been working on a PCB which saved fine yesterday. Made some minor tweaks today and on saving, I’m seeing the following: Can I get some advice on how to proceed? There’s only myself using the software and file system so I know it hasn’t been grabbed by someone else. Files exist on a OneDrive folder and definitely exist on the local filesystem. EDIT: I saved a copy (ok), closed and then tried re-opening the PCB and got this error

A lot of errors on Update Schematic from PCB - Footprints - KiCad

Kicad Board Edge Error with Kicad Stepup - Software - KiCad.info

Error loading pcb board / cache.lib not loading - Software - KiCad

Failed to load pcb layout expecting '(' in .kicad_pcb file line

Capture Walk-through 9: DRC

Beginner's Guide to KiCad - SparkFun Learn

KiCad unable to open PCB more recent version than From

Beginner's Guide to KiCad

Schematic and PCB problems after upgrading from V6.x to V7.x

Update PCB from schematic (Not Responding) - Layout - KiCad.info

Erroe message: Symbol C1 pad 2 not found in Footprint - Layout

KiCad 7.0.0 Is Here, Brings Trove Of Improvements

Accessing, Defining & Managing System Preferences for CircuitMaker