Cannot build when changing folder location in Xcode 6

Question

I've got an Xcode project that runs perfectly. Then I change the folder location by moving it to a 'iOS projects' folder at the same location and now it couldn't compile anymore, even when I move it back to the original location. Here is what I got:

Answer 1

1. Delete your app from the phone or "reset contents and settings" from the simulator.
2. Clean your build cmd+option+shift+k
3. Clear out your derived data.
4. Build and hopefully there are no errors.

If you're getting errors after that go here and follow the instructions on the accepted answer. Error after renaming Xcode 6 project: "linker command failed with exit code 1 (use -v to see invocation)"