SparkFun microSD Transflash Breakout with Mini Pro

I am using a Arduino Mini Pro (3,3V, 8 MHz) and want to use the SparkFun microSD Transflash Breakout (SparkFun microSD Transflash Breakout - BOB-00544 - SparkFun Electronics)

I connected it like this:

CD — empty
DO — Pin 12
GND — GND from the Mini Pro
SCK — Pin 13
VCC — 3,3 V from the SparkFun USB to Serial Breakout - FT232RL
DI — Pin 11
CS — Pin 10

It always fails to build up a connection. Can somebody help me?
thanks