Instant crash on iPad1, iOS 4.3.3 with AIR 3.9.0.960 Beta

I built my application just fine.

They also run perfectly okay on those devices:

- iPod Touch 5, iOS 7.0

- iPhone 3GS, iOS 5.0.1

- iPhone 4, iOS 6.0

- iPad 3, iOS 6.1.3

But it crashes instantly on iPad1, iOS 4.3.3

I tried to debug to see if there's any code that's causing this crash, but it doesn't even pass the connection phase.

As soon as I see the launch image, it crashes to home screen.

My application uses several ANEs:

- Milkman's GoViral, GameCenter, StoreKit

- Freshplanet's Chartboost, Flurry

- Adobe NetworkInfo

- StickSport's CanOpenURL

- StickSport's SilentSwitch (I guess I don't need this extension anymore..)

Here's a message from crash report:

Date/Time:       2013-09-27 11:32:01.966 +0900

OS Version:      iPhone OS 4.3.3 (8J3)

Report Version:  104

Exception Type:  EXC_BREAKPOINT (SIGTRAP)

Exception Codes: 0x00000001, 0xe7ffdefe

Crashed Thread:  0

Dyld Error Message:

  Symbol not found: _OBJC_CLASS_$_NSJSONSerialization

  Referenced from: /var/mobile/Applications/783749F9-1136-4A50-A98F-5265EDEC6EBC/Test HD.app/Test HD

  Expected in: /System/Library/Frameworks/Foundation.framework/Foundation

in /var/mobile/Applications/783749F9-1136-4A50-A98F-5265EDEC6EBC/Test HD.app/Test HD

  Dyld Version: 191.3

I know there are only so little people who are still using iOS4, but they exists.

Is anyone experiencing the same issue on iOS4? or instant crash?