Question No backup: Runtime error: The check dump failed with code '1'

[blackcats]

I have a new installation of Plesk 12.0.18 on CentOS 6.6.
This is the text from the server information page in Plesk:
more: sun láng hạ
Parallels Plesk v12.0.18_build1200140606.15 os_CentOS 6
CentOS 6.6 (Final)

I am not able to take backups of the content of the server. This is the error I get:
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Error:
Runtime error: The check dump failed with code '1'. The dump can contain invalid data! at /usr/local/psa/admin/bin/plesk_agent_manager line 1022.

Error:
The dump have been invalidated by check-dump operation
more: sun láng hạ
Can anyone help?
Smith

 

[IgorG]

Any related detail from backup logs? From /usr/local/psa/PMM/logs/pmmcli.log and /usr/local/psa/PMM/logs/backup-<datetime> at least?