That is a very old version of the client. You probably want to upgrade your client to something newer before you try anything else.
Eric On May 11, 2017, at 10:36 PM, tina S. <tinasoltan...@gmail.com> wrote: Hello, i was working with the svn and tried to revert some files then i started getting this error and right now i can not do anything with my source i repaired and re installed the software but no luck please i need an urgent help with this issue Subversion encountered a serious problem. Please take the time to report this on the Subversion mailing list with as much information as possible about what you were trying to do. But please first search the mailing list archives for the error message to avoid reporting the same problem repeatedly. You can find the mailing list archives at http://subversion.apache.org/mailing-lists.html Subversion reported the following (you can copy the content of this dialog to the clipboard using Ctrl-C): In file 'D:\Development\SVN\Releases\TortoiseSVN-1.7.11\ext\subversion\subversion\libsvn_subr\token.c' line 51: internal malfunction -- Best Regards Tina S.