Can't cast spells

[fanman55]

ok before i go any further, im having this problem (i was hoping .map files would cure) i can see my target, i can click on my target, target is recognized in my targeting window, i cast an attack spell or a healing spell and i get this error

I dont know that target type:255 Spell: (15) Greater Healing
SOT:You must have a target for this spell.

i cast an attack spell and get this error

You begin casting Avalanche
I dont know that target type:255 Spell: (2 Avalanche
Unknown spell effect-1 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 39 in spell Avalanche (id 2
You entombed in ice
Unknown spell effect-1 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 255 in spell Avalanche (id 2
Unknown spell effect 39 in spell Avalanche (id 2

i have no idea at this point how to fix this problem

thank you for any help
Fanman