I had the same issue the following worked for me. In replace curly quotes in Podfile's first line i.e
platform :ios, ‘7.0’ (Not working)
platform :ios, '7.0' (Working)
You are using curly quotes character, which is ‘=0x2018 & ’=0x2019. You should use straight quote which is '=0x27
TextEdit automatically converts normal quotes to smart quotes. You can disable smart quotes option from :
System Preferences -> Keyboard -> uncheck 'Use smart quotes and dashes'
