try to check deployment target -> IPHONEOS_DEPLOYMENT_TARGET
Change it to something higher when 3.0 is selected. for your architectures probably iOS 7.0 would be suitable.
I solve this issue with this settings.
Choose project workspace, in xcode choose General
tab, Deployment Info
section, change Deployment Target
to 7.0
You can also change it in Build Settings
tab in Deployment
section of your project. Field name is iOS Deployment Target
If you are using some versioning system don't forget to commit (and push) changes(like me...)