Kaz: try usual methods: reinstalling and patching. It sounds like the file that contains the animation of the wyvern dying is corrupted or something.

About wyvern heads, i havent played in a while (now im playing again from time to time but i havent got that far), but i think Thalanthyr from High Hedge buys them too. Not sure though

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http://www.angelfire.com/anime2/memnoch/ertai2.gif "Captive, captive... captive in heaven" -Ertai, Captive of the Blinding Angel

I got lots of xp in the dungeon in Ulcaster. Every time, you reload the game, the wolfs and other monsters come back again. OK, the wolfs only give 650 xp, but when I was in the dungeon (around 5th level), the monstes were almost harmless to my Party. This "trick" works also in most other areas, but then I got only hobgoblins (not enough xp) or other monsters like ogres (not so easy to kill and less xp).

Greetings

Chris