I am integrating Facebook in my application. As required frameworks I added to the project. But the app crashes without loading even first screen.
dyld: Library not loaded: /System/Library/Frameworks/AdSupport.framework/AdSupport
Referenced from: /var/mobile/Applications/8E09C9AA-CA81-4C26-AEED-B2C632B60A54/Gridlocked.app/Gridlocked
Reason: image not found
I use xcode 4.5 & my iPad runs iOS 5.1 The app runs fine on simulator (both 6.0 & 5.1) But when I connect iPad & change the deployment target to 5.1(as without this device is not shown to run) app crashes
Can anyone pls help to get out of it. I really spent good time & still looking struggling to achieve success
Found out the solution to the problem. The problem was setting the added frameworks as required instead of optional
GO TO Project-> Targets-> Build Phases-> Link Binary with Libraries
There, set the status of added frameworks to Optional
This solved my problem.
It may happen because of framework compilation. I worked out it
App target -> Build Phases -> Embed Frameworks.
So mark copy only when installing on. Clean the project and run it!
You need to add this Framework to Xcode.
Right-click on "Frameworks" > Choose Add > Existing Frameworks Locate "AVFoundation" then choose Add.
If you want to add it manually, choose the other button and navigate to:
/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS2.2.1.sdk/System/Library/Frameworks/AVFoundation.framework/
Replace the iPhone SDK version with whatever you are building against.
Perhaps also see this answer: Missing AVFoundation.framework
Also, sometimes you just need to close Xcode, then clean and rebuild.
also see dyld: Library not loaded: AVFoundation.framework Reason: image not found
I had the same problem. i keep all .dylib in system root directory usr/lib it working fine. At the run time .o file not get .dylib file path then it gives an error.
来源：https://stackoverflow.com/questions/12915050/still-dyld-library-not-loaded