Norton Ghost v14 not creating new monthly backups

Norton Ghost v14  and Windows 7 64 bit

 

Norton Ghost doesn't want to create a new backup set on the 1st backup of the month, is continues with the current backup set for months its up to 3 months now and I'm going to run out of disk space.  It seems to work well on the weekly set but fails to create a new set on the first backup of the month.

 

Any ideas?