Redmine

Hey all, just started using Redmine and installation went fairly easy up until I tried to connect with SVN, which runs on the same machine. SVN can be accessed via https://localhost/svn with a browser. But redmine gave an error "The entry or revision was not found in the repository". So I tried the solution on [[http://haknick.tumblr.com/post/2380507902/redmine-svn-subversion-certificate-issue-ubuntu]]. This seems like a solution that might work, but when i go to Redmine settings and then repository, a red cross is displayed in front of the "svn --config-dir /home/sedoyu/.subversion_www" command.
I am really stuck here, hope you could point me in the right direction