disc juggler cant load some games.cdi!please help me!!!!

i download street fighter 3 alpha,and skyes of arcadia cd 2 and cd3....i unpack them and i have a file.cdi....now i use discjuggler,but with this games,it cant open the cdi file and says:"runtime error"...and then it cracks!!!!!1please....have i to make some setting on discjuggler.......or what????please help mwe!!!!