Build Error with Unity4.6.2/xcode6.1->Linker Errors;Undefined symbols for architecture armv7:

Please help me!, I got these errors when build only on my device in Unity-iphone project;

Undefined symbols for architecture armv7: "__importString", referenced from: RegisterMonoModules() in RegisterMonoModules.o "__exportString", referenced from: RegisterMonoModules() in RegisterMonoModules.o ld: symbol(s) not found for architecture armv7 clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any help please,,