Here is what you did wrong, I had the EXACT same problem.
What you need to do is if you still have blackra1n app installed, you're in luck. Otherwise you need to rejailbreak using blackra1n. Asssuming you no longer have blackra1n, rejailbreak (after a restore, setup as new phone to avoid problems), and when you use blackra1n on the phone for the first time ONLY INSTALL CYDIA. Then, once you have all your Cydia apps installed, then go back into blackra1n and install Rock or Icy, but do them ONE AT A TIME! NOT AT THE SAME TIME, OR YOUR APPS WILL NOT WORK!