I don't really know anything about what caused the fork... just taking a guess seeing as how LBW has never had an update and it forked after exactly a month.
It was also a CAP-clone.
I don't know what happened with Lebowskies, but it seems like the devs made their own errors as it does not seem like the same issue cap is having. HBN is atm fork-free and the devs know exactly what they have to do to prevent forks as best as possible. Meaning we will have to suffer with a broken original wallet staking until the CAP issue is fixed. I would be rather surprised to see HBN forked by any conventional means, as I know people who hold the coin, holds lots of it and are trustworthy hobos.
As a sidenote, Bitcoin forked three years ago due to faults in the protocol. Forks doesn't mean a coin is doomed
From what I can tell there is no available link for the Windows client? The Google Drive link has been dead for quite some time. Can't be good for popularity.