I also tried creating a new site in Dreamweaver and getting the whole site locally again to a different location on my hard drive and it didn't work.
[I'm replying to this older thread because another user contacted me separately with what appears to be the same issue.]
Per the Subversion FAQ, the "same name already exists" error may be caused by having a case mismatch between the repository and your local file system:
Subversion is case-sensitive, but the file systems on Windows are not, so this case mismatch can happen in a number of scenarios.
If for, example, one of the directories in the path to a file changed (e.g. "documents and settings" versus "Documents and Settings"), or one of the files changes (e.g. "img0102.jpg" versus "IMG0102.jpg"), then you could run into this issue. A less common but possible scenario is if the case on the file name extension changes (e.g. "IMG0102.jpg" versus "IMG0102.JPG").
So, check the paths in the repository, and compare to what you have in the local view. (Maybe even move all of the files/folders from the local copy to somewhere else, or delete them if you know you have current copies of all files elsewhere.) If it's not a directory, then check the case on the file names.
Hope that helps!
Zeeshan again, from the private message. Let me tell you my exact scenario.
I just installed Adobe CS 5.5 trial, and installed wamp on my D drive, now keeping this in mind, the www directory is completely empty and I am using dreamweaver SVN to get the latest version from the repository that has the code and this is where I get this error:
SVN: #0, Path 'https://192.168.1.100:443/svn/sysadmin/trunk' is not canonicalized; there is a problem with the client.
SVN: #155000, Failed to add directory 'D:\wamp\www':
Now the thing is the folder is clean, why will I get this error?