Since in SVN 1.7 there is some kind of backward incompatibility: http://subversion.open.collab.net/ds/viewMessage.do?dsForumId=4&dsMessageId=431868
Is it chance for reorganizing the repository and put agent update files into work/update folder in other way?
I use HEAD revision of WPT and update it with “svn up”. Doing that is impossible with 1.7 version of svn client. The “cannot insert a file external defined on” error appears.