Schema 5.99 File is already open error - lock file problem

[hbridge77]

I’m getting a “File is already open” error while trying to open a file done in Kicad 5.99
After it posts the error it shows me a blank schematic sheet instead of my file.
Anyone have any suggestions?

The file is definitely not open somewhere. Is there an open flag embedded in the file itself somewhere?

Application: KiCad Schematic Editor

Version: (5.99.0-11177-g6c67dfa032), release build

Libraries:
wxWidgets 3.1.5
libcurl/7.54.0 LibreSSL/2.6.5 zlib/1.2.11 nghttp2/1.24.1

Platform: macOS Mojave Version 10.14.6 (Build 18G87), 64 bit, Little endian, wxMac

Build Info:
Date: Jun 28 2021 23:57:20
wxWidgets: 3.1.5 (wchar_t,STL containers)
Boost: 1.76.0
OCC: 7.5.1
Curl: 7.54.0
ngspice: 31
Compiler: Clang 10.0.1 with C++ ABI 1002

Build settings:
KICAD_USE_OCC=ON
KICAD_SPICE=ON

[hbridge77]

Things I’ve tried - I downloaded latest version of nightlies 5.99 - same error
Checked permissions on the file
Set permissions wide open
Some files have an @ sign at the end indicating metadata
I zapped this on the schematic file but no joy

Is there a json file where Kicad saves its last loaded file?
It is likely that Kicad crashed as I had a laptop crash or two from low battery.

I have found the file reference in the Preferences>KIcad>5.99>eeschema.json
Nothing out of order - I edited out some duplicate references with no joy.
Zapped all the file references with no joy.

Anyone know whether I can just delete all those json files - or is that a recipe for disaster?
Or at least a lot of work re-setting things up.

I also think I should have posted this in the Software category - maybe an admin can move it there? Thanks and sorry for not reading details about where to post (done, Joan)

[eelik]

@hbridge77

Anyone know whether I can just delete all those json files - or is that a recipe for disaster?

It just resets everything so that when next time you start, KiCad starts from scratch. I would keep the sym-lib-table and fp-lib-table files so that the library setup is kept, otherwise it’s safe and easy to delete everything.

[hbridge77]

Solved

It turned out to be a lock file found on MacOS at ~/Library/Caches/kicad
I just cleaned out the eeschema lock files and things worked again.