i have a scheme question

i have created a function called "repeat" that composes a function with itself n times. i have written it in two different ways. one works and the other doesn't. can you help me understand why the one doesn't work? tia.

the code:
https://gist.github.com/3134464

>>5
thank you. is there any way to make it work using only a lambda to compose instead of a separate procedure called compose?