I just went through the same issue. Leave the 'host directory' blank. Even though Bravenet says to put it in there, don't. Their 'tech support' answered my same question by just repeating what I had already read on their site. Some support! Leave it blank and you'll be in there in no time. Also, don't worry about being in 'passive' mode. It works either way.

Thank you Bravenet! You've brought mediocrity to a new low!