Running Topaz Studio V1.4.2. on a iMac 10.9.5
No sign of Detail under Specialty.
Deleated Topaz re-down -loaded nothing still not there.
Tried revalidating plug-ins - nothing
It is there under Adjustments but of course no pre-sets.
Now I can see it in my list in photoshop,under the Filter menu along with Clarity and Impression, Detail is right in the middle but if I try to open it from photoshop, Filters I simply end up in Personal Favourite not in detail.
Submitted a ticket but it was Friday and funnily enough they seem to give their staff the weekend off at Topaz central.
I am on UK time so I am not sure when you will be in. But it is interesting to see others having issues just just me.