WSJTX Memory Error

When starting WSJTX on OSX Big Sur you may see an error regarding shared memory, you can overcome this with the following commands.

you will need to execute these on each reboot.

sudo  sysctl  -w  kern.sysv.shmmax=104857600

sudo  sysctl  -w  kern.sysv.shmall=25600

you may be able to add these to /etc/sysctl.conf  but on some machines this wil not be preserved between restarts

NB the latest version of WSjTX does have the correct sysctl file and details of how to install this.

for OSX Cataline please use

sudo  sysctl  kern.sysv.shmmax=104857600

sudo  sysctl  kern.sysv.shmall=25600