I had this same problem today! Hopefully your fix is as easy as mine
was. You will need Dropbear SSH on your DroboShare which I assume you
have if you're trying to install BMFU.
SSH to the DroboShare and type:
ls -la /mnt/DroboShares
I suspect you have something there for Drobo and Drobo1. In my case I
had previously created a symlink for Drobo to point to the actual
share name I had created. This made BMFU work at the time. When I
reset my drobo and droboshare the symlink wasn't deleted and the
reference for 'Drobo' was pointing to the wrong place. I don't want to
be held liable for suggesting you delete the 'Drobo' reference if it
exists, but if you feel the reference point is wrong, that is what
needs to happen. The DroboShare is coming online, trying to mount the
Drobo as 'Drobo' but has to change to 'Drobo1' because of the existing
entry.
Dylan