报错：ignoring file /Applications/Xcode.app/Contents/Developer/Library/Frameworks/SenTestingKit.framework/SenTestingKit, missing required architecture armv7 in file
解决方式：在Framework Search Paths增加："${DEVELOPER_LIBRARY_DIR}/Frameworks"（包括引号）
参考：http://stackoverflow.com/questions/3354891/xcode-sentestingkit-not-found
I had this issue because there's a space in my Xcode installation: /Xcode 4.0.2
I fixed it by adding "${DEVELOPER_LIBRARY_DIR}/Frameworks" (with the quotes) to my Framework Search Paths.