Unfortunately, ReProvision is down due to a change in Apple’s Servers. We must wait for an update in order to sign apps with ReProvision. You will get an Xcode error when trying to sign apps with ReProvision.
ReProvision is a jailbroken app, developed by Matt Clarke (@_Matchstic), that allows you to sign and install apps that are not from the App Store straight from your Apple Device.
We will definitely be sure to keep you up to date with the latest on what is going on with ReProvision. Be sure to follow us on Twitter @AppleTerminal.