Xcode 4 hangs at “Attaching to (app name)”

Question

I just upgraded to Xcode 4 and for some reason my app won\'t run in the simulator or iOS device. It was working perfectly in Xcode 3, but all of a sudden now when I press ru

Answer 1

I frequently encountered this problem after renaming a project in Xcode 4.

I was able to fix it by editing the Bundle Identifier in the .plist file.

After I renamed the project, the Bundle Identifier would change to something like this:

com.yourcompany.${PRODUCT_NAME:rfc1034identifier}

changing it back to this:

com.yourcompany.${PRODUCT_NAME}

will stop Xcode from hanging and allow the App to run.