So I have been running cm13 for a while now and the twrp backups have saved my bacon more then once. As of about 2 days ago I can’t create full backups – I get some fork error 255 while backing up data. I have the same error under twrp 2.8 and 3.0, whether I backup to internal storage or SD card. Whether compression is enabled or not. Whether I generate md5 or not. If I unchecked data from backup, it completes successfully.
One of the reasons I gota 128 GB SD card is so that my backup for nightlies install are complete…. So…. What now? I’m out of ideas. BTW there is plenty of room to create the backup