Xcode 3 can't open interface builder

In Xcode 3, if I double 开发者_运维百科click an xib file, it doesn't open it with interface builder. It does absolutely nothing. How can I solve this ? I have Xcode 3 with iPhone SDK 4.0.2 installed.

I have faced this problem in a new Mac or sdk installation. Try opening the Interface builder app first. When it is open, try opening your xibs.

Try rightclicking the .xib and selecting open or open with.

Maybe it could work that way.

It should work when you double click the .xib. If not Click the interface builder icon in the dock at bottom after you double clicked the .xib.