Ghost 15 files backup says "Unable to open"

Hi

 

Am running a trial verions of Ghost 15 on win7 ultimate.

 

I have got service pack 1 for Ghost 15.

 

My problem is that if I eun the file folder backup on say "my docs" then after about 15 minutes or so it gives an error message telling me:

 

Error EC8F1C50: Cannot create file backup for job: mydocs. Error E7D1001D: Unable to open '//./SymantecSnapshot0/Users/Edward/Documents/flash dev/arupAcoustics/Soundfiles/af.mp3'. Error EBAB03F1: Access is denied. Error E7D10049: Device SymantecSnapshot0 appears to be offline, disconnected, or otherwise unavailable. Error E4BC0004: Unable to backup file C:/Users/Edward/Documents/flash dev/arupAcoustics/Soundfiles/af.mp3. (UMI:V-281-3215-7248)

 

I don't know what to do!

 

I have searched around these errors, but could find nothing concrete.

 

If I do a small job, like explorer favourites, that backs up fine.

 

Any help please