Calculator Keeps Crashing

[Learner]

I built the example iphone app that only takes one digit (1) with no problems.

However, the calculator keeps crashing to a black screen on me, and I am not sure why.

When I tried to build and Run it with the Interface Builder Command, it gave me this error message:

The identity 'iPhone Developer' doesn't match any valid certificate/private key pair in the default keychain.

Anyone have any idea whats going wrong?


edit: And before you ask, yes the settings were set to both Simulator & debug.



edit2: Just to clarify, when I click "Build & Run" in Xcode itself, the simulator boots up, but then all I get is a black screen, whereas when I go File > Build and Go in Xcode, I get the error message.

edit3: I also tried setting the Code Signing Identity to Any SDK in the Project Settings; still getting that error. I've been reading people are saying to set the ID to Any SDK and also to "set the value to Don't Code" but I'm still trying to figure out where this button is.

edit4: I edited the Value next to the "Any SDK" option to say "Don't Code Sign" restarted my comp, and tried running again with Interface Builder, and I got this error:

CodeSign error: code signing is required for product type 'Application' in SDK iOS4.3