Be very carefull using this program.
If the missing charts are from a routepack it they might still be available on the airport list.
I have had charts on my routepacks dissapear all the time. i finally found out what causes it and think that it is a dangerous omission by Jeppesen.
If this is the case let me know and i'll explain further.
PS when I go to print my home base's airport chart 10-9 it frezzes my computer.....
PPS i can see all YBCS approach charts but YMBA is not within my coverage area.