Trying to update to Stormblood and launcher says Heavensward is not installed...

[Nixxe]

http://forum.square-enix.com/ffxiv/t...=1#post1978491

Worked for me on PC.

This didn't work for me. I ended up using this solution, which worked fine:
http://forum.square-enix.com/ffxiv/t...-version-check

Despite being an old post, the download linked in it worked just fine.