I get the error "An error Occured retrieving the Passbook data. Please try again." when I try to add my movie tickets to passbook. Any help would be great.
Welcome to the Support Communities!
I'm sorry to hear you are having issues with movie tickets you purchased via passbook.
The article below may be able to help you with this issue.
iOS: Using Passbook
I Am receiving the same error and there is nowhere in that article you posted that explains how to resolve the problem. This started happening with my iPhone 6.
Retrieving data ...