SVN checkout not possible (version problem?)

Hello,

I have created a project an VCS adaptor for SVN and a scheduler. Unfortunately, when the scheduler triggers, I get an error message telling "svn: Unable to open repository ***************
svn: Expected FS format between '1' and '3'; found format '4'". Searching on Google gave me a hint that this might be a version problem with SVN. My SVN repository is in the locale file system and was created with the latest SVN version, 1.6.5. Is LuntBuild working with this SVN version?

Thanks!