svn 1.7 beta 2 fails to perform any operations when invoked on a symbolic link to a working copy root: > svn update Skipped '.' Summary of conflicts: Skipped paths: 1 > svn log svn: E155007: 'H:\ERS_trunk' is not a working copy AS far as I could find out, this is an issue known for a long time: see #2305, or #2716. Seemingly it hasn't been fixed because there is an uncertainty on how to handle it in certain cases: http://subversion.tigris.org/ds/viewMessage.do?dsForumId=1065&dsMessageId=2431531 However, in the case of WC-NG this should no longer be an issue - one can determine that this is indeed a symbolic link to a working copy _root_, not to some directory inside a working copy, and behave appropriately. I've reproduced the problem on Windows 7, bit I believe it is in fact platform-independent.
Original issue reported by cavaler