Adding assets to Xcode problem

问题:

I've an Xcode project which has been using svn, but we had to stop using it. Since then when ever I try and Add files to the project I get the error window below. The files actually get added to the file system (using Finder), but not to the project,so not displayed in the file system in XCode and therefore can't be accessed.

回答1:

I found the answer myself.

Just make sure you delete all the hidden .svn files / folders