Unable to build using Xcode 4 - The selected run destination is not valid for this action

Question

So I\'m horribly confused by this error, other threads on Stack Overflow mention I should set the SDK, but I see no option to do this. I\'m trying to build:http://wafflesoftwar

Answer 1

I fixed this by deleting my xcuserdata in my Project file. Not sure how it got corrupt. But it worked for everyone else in the office, deleting the xcuserdata did the trick. I made sure Xcode was closed while doing so. Just for fun, make sure you delete your DerivedData folder for the app, and do a build clean for superstitious folks.