If you are using Tortoise SVN and Zend Studio on Windows machine you may encounter this error message:
"svn: This client is too old"
Zend Studio ships with a cvs and svn clients which allows you to commit directly from the editor.
However, when you start using TortoiseSVN and perform an update to a checked out code TortoiseSVN
will update the format of .svn files.
That's why you see "svn: This client is too old to work with working copy".
Download and Install CollabNet Subversion Command-Line Client for Windows
Tell Zend Studio that you want to use a different svn binary.
Go to Tools -> Preferences -> Source Control
C:Program FilesCollabNet Subversionsvn.exe
Please note that you need the SVN client, not the Server ;)