Error while opening configuration file

My backup said it was successful, but I noticed this error in the log. How do I resolve this error? Did the backup work OK?

Regards,
Andrew

28 01/02/2015 15:51:09 Analyzing partition 'G:'...
29 Information 01/02/2015 15:51:09 Backup reserve copy attributes: format tib; need_reserve_backup_copy false;
30 01/02/2015 15:51:09 Error while opening configuration file .
31 01/02/2015 15:51:09 Error occurred while creating the file.
32 Information 01/02/2015 15:51:09 Operation: backup
33 Information 01/02/2015 15:51:09 Priority changed to Low.
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47 01/02/2015 16:16:16 ServerLRPC::_CloseConnection id=9,204
48 01/02/2015 16:16:16 ServerLRPC::_CloseConnection id=5,840
49 Information 01/02/2015 16:16:16 Operation has succeeded.

This is a brand new pc: AMD A8, 240gb SSD & 1tb HDD.