>
>Well, nothing comes easy :( The files are currently in use, I can not copy. I guess I have to stop the service first...
>
>UPDATE. I stopped the service, copied the files, but I'm still getting the same error
>
>Error * URL 'svn://my IP/Subversion_Repository' non-existent in that revision.
>
>Should I try to go back to the Rick's tutorial and re-do first steps?

Yes, I would delete the repository directory and run through the steps again.