Cumulus Support

What does a rash of error messages like this indicate?

17/11/2015 07:02:37 : 17/11/2015 07:02:37 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:37 : 17/11/2015 07:02:37 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:37 : 17/11/2015 07:02:37 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:56 : 17/11/2015 07:02:56 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:57 : 17/11/2015 07:02:57 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:58 : 17/11/2015 07:02:58 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:02:58 : 17/11/2015 07:02:58 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:02:58 : 17/11/2015 07:02:58 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:14 : 17/11/2015 07:03:14 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:14 : 17/11/2015 07:03:14 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:14 : 17/11/2015 07:03:14 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:15 : 17/11/2015 07:03:15 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:15 : 17/11/2015 07:03:15 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:15 : 17/11/2015 07:03:15 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:21 : 17/11/2015 07:03:21 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:30 : 17/11/2015 07:03:30 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:31 : 17/11/2015 07:03:31 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:31 : 17/11/2015 07:03:31 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:31 : 17/11/2015 07:03:31 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 07:03:41 : 17/11/2015 07:03:41 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 16:32:00 : 17/11/2015 16:32:00 Error writing data to data file: C:\Cumulus\data\Nov15log.txt. I/O error 32
17/11/2015 16:32:00 : 17/11/2015 16:32:00 Error writing EOL to data file: C:\Cumulus\data\Nov15log.txt. I/O error 103
17/11/2015 16:32:00 : 17/11/2015 16:32:00 Error closing data file: C:\Cumulus\data\Nov15log.txt. I/O error 103

It means this - http://wiki.sandaysoft.com/a/FAQ#I_am_g ... _error_103

I've just got a WD My Cloud network drive and have been experiment with the auto-backup feature, so I suspect it was scenario !: software scanning/accessing the file.