AU Instruments not showing up in Logic

Help!

I recently downloaded and installed Kontakt 4 player.

Unfortunately Kontakt 4 player wont show up in logic either in the au manager or the AU instruments menu. Though it works fine in protools (protools 7)- this makes me think it's a logic problem. (I use logic pro 8)...

All of my other AU instruments/plug-ins work fine including Kontakt2

I have tried:

-reinstall of kontakt 4 player (3 times)
-Uninstall, re-install of of kontakt 4 player
-deleting the audio units cache (User/Library/Caches/com.apple.audiounits.cache)
so logic rescans for AU.
-Shouting at the computer...

Any help would be much appreciated.

Cheers,

Joff