On further investigation (playing?)  I have found that I can run the 
incremental backup "manually" by opening the scheduled tasks and clicking "run" 
but get an error when trying to run automatically at the set time.

On 03/06/2013, at 7:23 PM, Barry Sexstone wrote:

> Good Evening (or whatever time you read this)
> 
> I have recently been given a seagate 2TB external drive which I am attempting 
> to use ad my daily backup in addition to a separate drive for  time Machine.
> 
> I have set up Carbon Copy Cloner to do a full backup of my hard drive and 
> then do an incremental backup daily.  This worked perfectly with my previous 
> drive - which failed a few days ago.   When I do an initial run of the CCC 
> schedule all appears OK and the hard disk is copied to the external disk.   
> 24 hrs later the scheduled backup tries to start but I get an error message 
> saying an error was found and the backup could not proceed.    Regrettably 
> while trying to find the problem I have lost the error details but they were 
> along the lines of  "unable to run the program as  an error was detected 
> while trying to detect your drive volumes/backup/daily."
> I have tried reformatting the destination drive,  this appeared to go OK and 
> this initial was once again OK but the incremental failed.  
> Any advice?
> 
> Barry
> 
> 
> iMac 10,1
> Intel Core 2 Duo 3.06 GHz 
> 12GB RAM
> 1.0 TB HD
> OS X 10.7.5
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
> Settings & Unsubscribe - 
> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>

-- The WA Macintosh User Group Mailing List --
Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>