Norton Ghost 14 - fails to finish, Error message

I installed a new External hard drive and ran 4 complete backups without problems. ( different days - WFMW ) Yesterday morning the backup failed with the following message. I uninstalled and reinstalled Norton Ghost 14 and attempted a second time. Same result. I changed the setup and excluded the verification of recovery points and it finished without incident. I ran a memory test and passed everything. Total backups allowed = 3.

Any solution provided would be appreciated.

 

Windows XP   5.01.2600 SP 3

C: 145.44 GB   G: 298.08 GB

 

Error EC8F17B7: Cannot create recovery points for job: My Computer Backup. Error E7D1001E: Unable to read from file. Error EBAB03F1: Data error (cyclic redundancy check).
Details: 0xE7D1001E