Guild Wars 2

The reward for the Hylek Collection (Recipe: Hylek Maintenance Oil) only brings up the option to Destroy it – you cannot double-click to learn it or select “Use” to learn it:

http://i.imgur.com/yTqLUkU.jpg

(And, since someone will ask, you can unlock the collection this through a Hylek Tongue drop off a hylek – I found it in eastern Metrica).

You might’ve been in WvW when you attempted to activate it. I had the exact same issue, then I left WvW and I could use it.

Thanks Rising Dusk, you are correct – worked once I was out of WvW – many thanks!