Got cydia installous not downloading!?

i have a 1st gen iPod touch v3.1.3 and jailbroke it with spirit. i have cydia, and a lot of things including installous are not downloading. themes wont download either. when i try to install installous, theres no confirm on, and it says "The requested modifications cannot bbe applied due to required dependencies or conflicts that cannot be automatically found." does anyone know what that means? very frustrating! please help thanks