Ghost 15 stopped running scheduled backups

I have a problem which has been discussed in many threads here, but none of the solutions is working.

Norton Ghost 15 has been making 4 backups a day on schedule for several months on my WIndows 7

PC.  For about a month now, it bascially doesn't work on schedule.  I can make a backup manually, and I

sometimes find that a scheduled backup has been made (sometimes at the scheduled time, sometime

not), but mostly the backups just don't happen.  I have sat at the PC at the appointed time with the task

manager running and saw no hint of activity related to Ghost.

 

Here's a history of what I have tried to do about this problem:

 

1. Encountered an actual error message; Norton chat technician said it was from a bad sector on the drive

being copied.  I ran chkdsk c: /f /r /x to clean it up; I also checked "Ignore bad sectors during copy" in the

Options/Advanced section.  Didn't fix schedule problem.

 

2. Reinstalled Ghost as follows: run Norton Removal Tool, reboot, run RegVac registry cleaner, reboot, run chkdsk

c: /f /r /x, reinstall Ghost from CD-ROM, run LiveUpdate twice.  Didn't fix schedule problem.

 

3. Tried first solution found on community.norton.com: delete *.pq* files from AppData folder and set up schedule

again.  This bolluxed the program so much that I had to repeat #2 above.

 

4. Tried second solution found on community.norton.com: unclick "Monitor disk space usage for backup storage" selection in Settings section of "Manage Backup Destinations" task.   Didn't fix schedule problem.

 

5. Tried third solution found on community.norton.com: ran SmeDump.exe and PartInfo.exe in Norton Ghost Utilities folder.  Partinfo.exe gave essentially zero output - here it is in full:

"Getting partition info from all drives
Partition information for drive 0
Partition information for drive 1"

SmeDump produced a long output stream which showed no obvious references to faults or errors.

 

At this point, I have run out of ideas.  WHat do I do?

 

Thanks.