Using TortoiseSVN 1.6.16 and SVN server (svnserve) 1.6.11, when I try to 'Merge - Reintegrate a branch' I get this error:
SVN merge reintegrate fails with error: (retrieval of mergeinfo unsupported)
Recommendations elsewhere tell me that this message occurs when either the client or server is older than 1.5, but this does not help me.