Tim, something I have been meaning to put in the errata thread is that the elemental bolt in wizardry is listed with a vs of - instead of DEF which hopefully can  be corrected in the next printing.  I have always assumed it should be vs DEF and played it that way during playtesting.   My players as gratefull for the change of Spellcasting from being only a Will based skill.  One of them had to change races when he was unable to create an Elven druid without having a negative Will bonus limiting his ability to cast spells.