I just purchased a new WD My passport Ultra, and plugged it in on my Macbook pro with 10.9.4.
The mac does find the passport, and if I type my mac password I can put files on the passport. But there is no installation pop-up showing what so ever. I tried to download it from wd directly, but the installation just crashed every time.
When I plug the passport in to my mac, I can open the passport just fine. When I open it, there is no pop-up what so ever. I can but files on the disk, but I want to create a password, download objects directly to the harddrive, which I at the moment can`t.