"неожиданное пустое имя общего ресурса" в backuppc на Ubuntu 14.04

Я пытаюсь установить backuppc на Ubuntu 14.04. Я попытался сделать это, следуя этому уроку Digital Ocean, а также этому на dalaris.com, но он выдает мне сообщение об ошибке, когда я добавляю ПК с Windows и пытаюсь запустить его в первый раз.

unexpected empty share name

Я получил это сообщение сейчас

File /var/lib/backuppc/pc/172.30.8.104/XferLOG.bad.z (Extracting only Errors)

Contents of file /var/lib/backuppc/pc/172.30.8.104/XferLOG.bad.z, modified 2017-08-10 16:32:41 (Extracting only Errors)

Running: /usr/bin/smbclient \\\\172.30.8.104\\C\$ -U  -E -d 1 -c tarmode\ full -Tc -
full backup started for share C$
Xfer PIDs are now 2861,2860
WARNING: The "syslog" option is deprecated
[ skipped 1 lines ]
tree connect failed: NT_STATUS_ACCESS_DENIED
[ skipped 1 lines ]
tree connect failed: NT_STATUS_ACCESS_DENIED
tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0 filesTotal, 0 sizeTotal
Got fatal error during xfer (No files dumped for share C$)
Backup aborted (No files dumped for share C$)
Not saving this as a partial backup since it has fewer files than the prior one (got 0 and 0 files versus 0)

Также сказано

File /var/lib/backuppc/pc/172.30.8.104/XferLOG.bad.z

Contents of file /var/lib/backuppc/pc/172.30.8.104/XferLOG.bad.z, modified 2017-08-10 16:32:41

Running: /usr/bin/smbclient \\\\172.30.8.104\\C\$ -U  -E -d 1 -c tarmode\ full -Tc -
full backup started for share C$
Xfer PIDs are now 2861,2860
WARNING: The "syslog" option is deprecated
Domain=[THILAN-PC] OS=[Windows 7 Professional 7601 Service Pack 1] Server=[Windows 7 Professional 6.1]
tree connect failed: NT_STATUS_ACCESS_DENIED
Domain=[THILAN-PC] OS=[Windows 7 Professional 7601 Service Pack 1] Server=[Windows 7 Professional 6.1]
tree connect failed: NT_STATUS_ACCESS_DENIED
tarExtract: Done: 0 errors, 0 filesExist, 0 sizeExist, 0 sizeExistComp, 0 filesTotal, 0 sizeTotal
Got fatal error during xfer (No files dumped for share C$)
Backup aborted (No files dumped for share C$)
Not saving this as a partial backup since it has fewer files than the prior one (got 0 and 0 files versus 0)