CocoaPods file reference is a member of multiple groups
This is a bug in Cocoapods -And probably it won’t be fixed in a long while- Running export COCOAPODS_DISABLE_DETERMINISTIC_UUIDS=YES on the Terminal seems to suppress the warnings for now. EDIT Feb 2016: In latest version of Cocoapods this has now been moved to the install section of the Podfile: install! ‘cocoapods’, :deterministic_uuids => false