Unity ads problem with iOS 64bit build

I am having problems with Unity ads on building IL2CPP iOS version.. The build works fine if I am not using IL2CPP but I have to use 64 bit because of apple's new rules. Which framework do I need to add extra for using Unity Ads with 64bit iOS version. I couldn't find anyone on the net complaining about that.. Am I the only one who has that error? Steps to reproduce is really easy.

Create new project -> Import the downloaded Unity ads package -> Change settings to IL2CPP and then build and try to run on xCode..

I am using Unity 4.6.3p1

Here is the error

Undefined symbols for architecture armv7: "_AsyncExec_runWithCallback_m4395_gp_1_0_0_0", referenced from: GenInst_AsyncExec_runWithCallback_m4395_gp_1_0_0_0_Types in Il2CppGenericInstDefinitions.o (maybe you meant: _GenInst_AsyncExec_runWithCallback_m4395_gp_1_0_0_0) ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation)

photo link to the error http://i1211.photobucket.com/albums/cc439/thetnswe/Screen%20Shot%202015-03-23%20at%204.46.35%20PM_zpswfrxleen.png