Using xnb I went under media management, options, barcode rules, and set
up a barcode rule with the following:

Barcode tag             07
Pool                    SCRATCH
# mounts                0 (infinite)
desc                    SDLT media

Using almost the exact format under 4.5 it worked without issue (only
difference is barcode tag being DJX instead of 07).  Under 3.4 though it
doesn't seem to work and I can't see any reason why.

Can anyone shed light on this?

Thanks.

~JK