Hello,
It looks like Arcane Wisdom (336) skill is not making DOT. Well.. it is, but once every 3600 sec instead each 1 sec.
The xmls looks correct. It is something different.
While searching it I also found that when I start Arcane Power (it does work, makes dmg), and then try to use Arcane Wisdom (which is not working), suddenly Arcane Power also stops to work. It might be related.
Best regards!