Xcode4 debugging

Today I started xcode and opened 开发者_如何学Cmy project and the code is different, it have lost its colors, for each variable, nsstring ect..

when i build my project into my iphone, i dont get the GUI im making.. no matter what changes im making in xcode, im getting the GUI as when i builded it here in the morning..

What chould have happend and what can i do?

Thanks.

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Delete your build folder and retry. If you don't know where to find your Build folder got to: /Users/%USERNAME%/Library/Developer/Xcode/DerivedData/%projectname*/ That is the default folder for XCode 4 to place the projects buildfolders in.

Edit*** Sorry, forgot one folder.