dyld: Symbol not found: error how to resolve this issue

Question

I have the following code (given below) where I am using NSURLConnection for connecting and parsing the response string. But I am getting the following error:

Answer 1

dyld errors are caused by a missing or a bad library linking, not code.

Double check your frameworks links, do not hesitate to delete/recreate the links, taking care of iOS version you are taking your frameworks from. (usually use the Xcode provided list, do not browse for files)

In your case I won't be surprised that linking /System/Library/Frameworks/Security.framework is an error, since it doesnt look like belonging to iOS SDK, looking at its path...

Which I guess should be instead something like: /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/Frameworks/Security.framework