Iphone 3G 2.1 question

Why is it, when i have jailbroked it, and i installed the application or a game, i get the ” The application cannot be opened” ??? how to fix that???
Thanks in advance
Answer #1
Have you installed a legit app from the app store first?
Answer #2
Moved.
Answer #3
No i didnt, how to do that when i cant register without the credit card??
Answer #4
You can register without a credit card…..

http://hackulo.us/forums/index.php?showtopic=941

Answer #5
u must download a free app from appstore first. read here
http://www.google.com?t=1698921&highlight=
Answer #6
u must download a free app from appstore first. read here
http://www.google.com?t=1698921&highlight=
And you must read the whole thread before posting so this doesn’t happened.