Guild Wars 2

Hello!
My Engineer’s Grandmaster’s Training Manual is bugged, I can’t consume it. I double-click it and nothing happens, I right-click it and select Use, but still, nothing happens. It cost 2 golds! I don’t want to waste my precious, hard earned gold. :_)
Oh and I’m lvl 80, so it’s not because I didn’t reach lvl 60.
I purchased this manual in Lion’s Arch a day ago.

It would be great if it said that, to be fair. I tried to use a GM manual at L60 to avoid buying the L40 manual, and I, too, thought it was broken until I manned up and bought the L40 one. If there were a warning or popup or something that said “You must use the lower level manual before you can use this one” it would fix a lot of this confusion.

Thank you, problem solved!