Error ED800012 in Norton Ghost and the rest!

I recently bought Norton Ghost 14 and am singularly unimpressed.  I am not an expert and simply want a backup system that copies my c-drive to an external drive.  Creating an SRD disc was problematical and took the support team about 1 hour remotely controlling my PC to get the thing to work - not a good start.  A week or so later I am now getting an ED800012 error when I backup with the software unable to verify a recovery point.  I have “fixed” this by disabling “the limit on the number of recovery point sets saved for this backup” but why should that give an error message and what are the consequences of disabling this “feature”.  If I could return this software and get my money back, I would.