Xcode 4 Preview 4 displays "Build Succeeded" but with errors

Question

Xcode 4 Preview 4 displays "Build Succeeded", as show the image below there are 5 erros. Actually there are more than 5 errors, but it seems that Xcode doesn't build anymore. It happened when i built the project in xcode 3 while the xcode 4 was open with the same project. Anyone have an idea to overcome this bug and reestablish the Xcode??

I tried to restart the Xcode, restart the mac. I don't know how to clean up the build. The "clean all" option in Product menu is unable.

Thanks in advance.

Answer 1

Follow these steps:

1. Edit your PCH file
2. Save it again.
3. Clean and build
4. No 4th step.

Hope it helps!