I've been successfully testing my app with the PayPal iOS SDK for the past few days and for some reason today it now presents me with the message below when I try to launch the View Controller.
"ppapi_error_code_10870 - Please go to the App Store to install the latest version of the PayPal app."
I'm using the latest SDK version (1.1.1) and can set it to production mode and get the View Controller to load just fine.