Title sums it up. I am unable to enchant my vellums with weapon enchants. All other enchants seem to be working as intended. When I try to enchant vellum I get " This spell is incompatible with your weapon appearance".
Had the same issue on my Hunter. I even tried to apply the enchant to a random weapon in my bags and got the same error message. Ulitmately I found out it was because I was wearing my bow. Something about the code is making it take your equipped weapon into consideration before allowing you to perform the enchantment. The solution I found to work for my hunter was to place my bow in my personal bank. Once I did this, the enchants performed normally. Hope this helps. 