tab bar controllers won't open in Interface Builder

Question

Hi all, I'm developing a new app but I've a little issue with Interface Builder...
I've installed Xcode 3.2.3 and iPhone SDK 4.0 GM.
When I create a new Tab Bar Application project in Xcode, opening the MainWindow.xib file in IB, the Tab Bar Controller won't open... I tried reclicking it but nothing!
I also uninstalled and reinstalled all developer tools but without any results...
Finally if I try to build and run the project in the simulator, the tab bar controller shows normally!

Can anyone help me? :)

Answer 1

It sounds like something similar to what I have experienced with my projects and the new sdk. Some of my IB files such as ones that contain UIViews when double clicking on them they refuse to open.

I haven't had to reinstall or nothing usually quitting IB and xcode and restarting helps I can't remember if I have done anything else to fix it. It may be an issue with the new 3.2.3 xcode as I don't recall having anything like this happen in my 3.2.2 build.

If it becomes a large problem for you have you considered removing the tab bar and rebuilding it? Just a thought. It may be troublesome to do so but if it fixes it and allows you to continue coding your project it would be worth it.

Answer 2

You said in your question that you're running iPhone SDK 3.2.3 with iOS4 GM. You should update your SDK, as the SDK is now at version 4.0 officially.

Otherwise, it sounds like your Xcode installation is somehow corrupted in some way. You may need a complete reinstall.