I get the following error when using the updater to go from 12.0.2 to 12.0.3
Verifying integrity
Curl error: Failed writing body (4096 != 16384)
Help!
Ok, I’ve resolved this. I was out of disk space!
It should be noted that your disk can fill up without you quite knowing it because deleted files are not deleted and the updater creates backups of the source code that can also fill up your disk. My source code backups filled nearly 500MB, taking the disk to full.