Hi i'm running ccm 4.2 with bars 4.0.14, when i made the backup includding the cdr option it returns an error and only backs up the ccm configuration portion. I suspect this is because of the size of the cdr database, it have not been purged long time ago. Heres is a log sample with and without cdr.
If you haven't purged the cdr database yet, then you will have this kind of issues when backing up the callmanager with cdr database.
I will suggest you to manually purge cdr database, I try to backup with bars again, also have you downloaded the latest BARS version for callmanager 4.2 ?
Please let me know how everything goes.
Also I will appreciate if you could please upload the backup logs