Hello I raised this ticket. Ben Reser suggested to discuss on here in the first instance
http://subversion.tigris.org/issues/show_bug.cgi?id=4511 Extend E155021 message to include supported format version svn, version 1.7.5 (r1336830) Could error message E155021 be extended please to include the format code that is supported. svn: E155021: This client is too old to work with the working copy at '/cygdrive/c/ws/shared_ws/dev_code' (format 31). You need to get a newer Subversion client. For more details, see http://subversion.apache.org/faq.html#working-copy-format-change e.g. could it be changed to: svn: E155021: This client supports (format 28) and is therefore too old to work with the working copy at '/cygdrive/c/ws/shared_ws/dev_code' (format 31). This is useful to know, because we have various different applications which checkout in svn format (cygwin svn, Hudson, Jenkins, TortoiseSVN) and are suffering from incompatibility. Of course, what would be even better if client formats were backwards compatible, and tools forward compatible. Like audio codecs are. As my local soltuion, I found a computer that had old Cygwin installed, and copied that folder so that I could get an old version of svn.exe svn, version 1.7.5 (r1336830) compiled Jun 27 2012, 15:27:52 I have seen similar messages from SVN.exe when the checked out repository is in an new format than svn.exe (e.g. svn.exe supports up to format 29, but checked out copy by TortoiseSVN is in format 31) Is there a published list of the format numbers and what versions they change? I'm still a little confused. Regards, Jon What is your opinion on this change?