I have been using Xcode to develop and publish apps for almost a year. I have been using git as the local repository and bitbucket as the remote repository. Everything has been going fine until this morning. I am now getting an error 'The working copy "xxx" failed to commit files. Please tell me who you are.' Xcode then suggests that I run git config and give it an email address and name. I have no idea why it suddenly needs to know who I am. I don't know who it thought I was before and I don't want it to become more confused than it is now. I have not done anything with command prompts on the Mac so I am not sure where it expects me to enter this information. I vaguely recalled seeing suggestions on using the command prompt to set up bitbucket a year ago but they looked confusing so I did everything from the xcode GUI. Is this something new in xcode 4.6? What do I do?