Success! I found a copy of the icoCUR.dill in the effects folder. When I deleted it the plugin started working again! Also I deleted the .dill file from the filetypes folder and pasted in a new one I just downloaded.
Well,I guess I posted this in the wrong place the last time.Anyway,i'm getting an error report everytime I try to save a file in .ICO.So how can I fix this?