Referenced form errors

Question

I was using xcode 4 and now I've upgraded it to xcode 5. Now when I try to product -> archive my project I get those errors:

Undefined symbols for architecture arm64:
"_OBJC_CLASS_$_RKObjectMapping", referenced from:
objc-class-ref in RestObjectMappings.o
"_RKMIMETypeJSON", referenced from:
___54-[RestObjectManager sendRestObject:method:usingBlock:]_block_invoke in RestObjectManager.o
___67-[RestObjectManager sendRestObject:method:resourcePath:usingBlock:]_block_invoke in RestObjectManager.o
___73-[RestObjectManager sendRestObject:method:withResponseAsList:usingBlock:]_block_invoke in RestObjectManager.o
"_OBJC_CLASS_$_RKObjectManager", referenced from:
objc-class-ref in HttpNetworkObserver.o
objc-class-ref in RestObjectManager.o
objc-class-ref in MyViewController1.o
objc-class-ref in MyViewController2.o
objc-class-ref in MyViewController3.o
objc-class-ref in MyViewController4.o
objc-class-ref in MyViewController5.o
...
"_OBJC_CLASS_$_RKClient", referenced from:
objc-class-ref in HttpManager.o
objc-class-ref in MyViewController1.o
objc-class-ref in MyViewController2.o
objc-class-ref in MyViewController3.o
objc-class-ref in MyViewController4.o
objc-class-ref in MyViewController5.o
"_RKReachabilityDidChangeNotification", referenced from:
+[HttpNetworkObserver registerNetworkObserver] in HttpNetworkObserver.o
+[HttpNetworkObserver unregisterNetworkObserver] in HttpNetworkObserver.o
"_OBJC_CLASS_$_RKJSONParserJSONKit", referenced from:
objc-class-ref in MyViewController1.o
objc-class-ref in MyViewController2.o
"_OBJC_CLASS_$_RKURL", referenced from:
objc-class-ref in RestObjectManager.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

How to get rid of those errors?

Answer 1

Just remove the arm64 from Build Settings