Howard,
I'm glad you got things working. Regarding the link, I'm not sure what went wrong that the error code got changed (I will look into that further).
As for switching back to 10d to make this better, I would not expect this issue to be any different between 10d and 11d-the underlying code there hasn't changed.
The way Backup Exec deals with removable hard drives needs to be revisited to make it more elegant in the future.
Thanks for the feedback,
Daniel