[Tails-testers] Tails Devel Live USB Creator Error

For ISO: tails-i386-devel-1.1-20140625T0705Z-28fe808.iso

Creation of a Beta USB from an Alpha USB fails both for clone &
install & clone & upgrade. The last log I saved from this error reads:

cat /media/Tails/utils/mbr/mbr.bin > /dev/sdd
cat: /media/Tails/utils/mbr/mbr.bin: No such file or directory