Thanks. I upped the log level to 9 and the results are below.
2017-05-29 01:18:50 full backup started for directory /mnt/j/Desktop
2017-05-29 01:18:52 Got fatal error during xfer (rsync error: unexplained error (code 255) at io.c(629) [Receiver=3.0.9.6])
2017-05-29 01:18:57 Backup aborted (rsync error: unexplained error (code 255) at io.c(629) [Receiver=3.0.9.6])
2017-05-29 01:18:57 Removing empty backup #0
2017-05-29 01:18:57 BackupPC_backupDelete: removing #0
2017-05-29 01:18:57 BackupPC_backupDelete: No prior backup for merge
2017-05-29 01:18:57 BackupPC_refCountUpdate: computing totals for host
akibu-desktop
2017-05-29 01:18:57 BackupPC_refCountUpdate: host
akibu-desktop got 0 errors (took 0 secs)
2017-05-29 01:18:57 BackupPC_refCountUpdate total errors: 0
2017-05-29 01:18:57 BackupPC_backupDelete: got 0 errors
2017-05-29 01:18:57 Finished BackupPC_backupDelete, status = 0 (running time: 0 sec)
2017-05-29 01:18:50 User backuppc requested backup of
akibu-desktop (akibu-desktop)
2017-05-29 01:18:50 Started full backup on
akibu-desktop (pid=1571, share=/mnt/j/Desktop)
2017-05-29 01:18:57 Backup failed on
akibu-desktop (rsync error: unexplained error (code 255) at io.c(629) [Receiver=3.0.9.6])
2017-05-29 01:19:19
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:19:19 Running BackupPC_Admin_SCGI (pid=1587)
2017-05-29 01:20:20
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:20:20 Running BackupPC_Admin_SCGI (pid=1623)
2017-05-29 01:21:20
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:21:20 Running BackupPC_Admin_SCGI (pid=1627)
2017-05-29 01:22:20
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:22:20 Running BackupPC_Admin_SCGI (pid=1632)
2017-05-29 01:23:20
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:23:20 Running BackupPC_Admin_SCGI (pid=1636)
2017-05-29 01:24:20
scgi : BackupPC_Admin_SCGI: can't load perl SCGI module - install via CPAN; exiting in 60 seconds
2017-05-29 01:24:20 Running BackupPC_Admin_SCGI (pid=1640)