I've moved your post to its own thread. Not only was your question buried in another thread, it was off-topic. Our forum rules state that if you have a question that does not apply to a thread, start another. This keeps threads neat and helps members keep up with the topics. Thanks for your understanding.
On your question:
Try restarting or resetting your iPad. To do (apologies if you already know this):
Restart: Hold down the power button until the power off slider appears. Slide it off. When the iPad finishes shutting down, hold down the power button again until the Apple logo appears.
If that didn't help, try this...
Reset: Hold both the power and home buttons until the screen goes dark and the Apple logo then appears (the slide to unlock screen may or may not appear). Once the logo appears, release the buttons. After a time, your homescreen will appear. Please note that it may take some time for the Apple logo to appear or for your homescreen to appear (or both). This is normal. Eventually, the homescreen will appear.
After the iPad re-loads try opening Cydia again. Good luck and let us know how you get on.
Marilyn
