I just installed Xcode 4.6 (I had Xcode 4.5.1). I just opened an existing project and got this message:
Xcode 4.6
Xcode 4.5.1
The working copy \"path/
In my case, the latest SVN placed at path /usr/bin/, therefore the step 3 will look like this:
cd /Applications/Xcode.app/Contents/Developer/usr/bin/ mkdir bak.svn mv svn* bak.svn ln -s /usr/bin/svn* /Applications/Xcode.app/Contents/Developer/usr/bin/