Maple Warrior 30 book glitch?

So today I decided to buy a MW30 book and try my luck:
http://i1241.photobucket.com/albums/...4/MW30book.jpg
In the picture above, you can see my MW is currently at level 20, with +1 level from the Leafre card set. But when I double clicked my MW 30 book, I got an error notice saying "You cannot use Mastery Book":
http://i1241.photobucket.com/albums/...W30problem.jpg
I've tried relogging, changing locations, changing the Crusader Codex card set so I don't have +1 skill levels, but the end result is I still can't use the MW30 book.
So, what I'd like to know is if there is a glitch with MW30 books with Mihiles (and other classes), or is it just me? :f6:

How about try adding the last sp so its lvl 20 instead of 19? Although normally you shouldn't need to do this anyways...

Quote:

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Originally Posted by ultimax21

How about try adding the last sp so its lvl 20 instead of 19? Although normally you shouldn't need to do this anyways...

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It's already level 20? The "Skill up" button is greyed out.

It already is level 20.

EDIT: Darn I type slow :f3:

Most likely reason is because you're a mihile. Just notify it to nexon and they'll add it to their bug list.

Didn't Jett's have the same problem?