On Jan 25, 2012, at 03:43, d.guthm...@gmx.net wrote: > We are using Subversion 1.5.1 on Apache 2.2 on the server-side
As a first step, you should upgrade the Subversion software on your server. Subversion 1.5.x and earlier are not supported anymore. http://subversion.apache.org/docs/release-notes/1.7.html#svn-1.5-deprecation