Help Backing up ROM on AT&T Galaxy Note 3 N900A

[akrobert]

Hello.
I have an AT&T Samsung Galaxy Note 3 SM-N900A that I have rooted using towelroot and have verified that I have root access.
I am trying to backup my current ROM before I do anything so I have something to go back to and when I use any of the programs that everyone recommends for ROM management the phone boots into the Recovery screen and I get the following screen
Android system recovery <3e>
KOT49H.N900AUCUCNC2
#MANUAL MODE#
--appling Multi-CSC...
Applied the CSC-code : ATT
Successfully applied the multi-CSC
E:failed to mount /data (invalid arguement)
cant mount '/data' (invalid arguement)
E:failed to mount /data (invalid arguement)
E:cant mount /data/log/recovery_log.txt
E:failed to mount /data (invalid arguement)
E:cant mount /data/log/emmc_checksum_log.txt
From here it gives me the following options
Reboot system now
apply update from ADB
apply update from external sd card
wipe data/factory reset
wipe cache partition
apply update from cache
in the middle of the screen I have a droid on its back with a red triangle with an ! in the center that says No command underneath it.
Im trying to make a ROM backup and have tried it using ROM toolbox, Nandroid Manager, TWRP Manager, Clockworkmod ROM manager
any help getting this ROM backed up would be appreciated.
Thanks
Robert