We use the Ed. 3 Spell Compendium as well as Paizo sources and have been at loggerheads over the Ring of Blades spell, which creates a whirling circle of blades around the caster at a 5 foot distance. Presumably the circle of blades has a minimum width -say 1 foot. If the caster is backed against a wall or similar obstacle, will the spell work or fail? If it works, how do the blades avoid the wall? Do they bounce off it and possibly hit the caster, or rise over the caster and down the other side to continue the circle?
