error occured during svn merge

Hello!

I've faced with crash during following command ( dns name was replaced ):
svn merge --dry-run -r3778:5716 svn://svn.example.com/repo/trunk . | tee
merge.log
Working copy has few local modifications ( removed svn:mergeinfo on some
files and directories ). Svn log attached.

svn --version
svn, version 1.6.13 (SlikSvn/1.6.13) X64
    compiled Oct 5 2010, 10:50:45

Copyright (C) 2000-2009 CollabNet.
Subversion is open source software, see http://subversion.tigris.org/
This product includes software developed by CollabNet
(http://www.Collab.Net/).

The following repository access (RA) modules are available:

* ra_neon : Module for accessing a repository via WebDAV protocol using
Neon.
   - handles 'http' scheme
   - handles 'https' scheme
* ra_svn : Module for accessing a repository using the svn network protocol.
   - with Cyrus SASL authentication
   - handles 'svn' scheme
* ra_local : Module for accessing a repository on local disk.
   - handles 'file' scheme
* ra_serf : Module for accessing a repository via WebDAV protocol using
serf.
   - handles 'http' scheme
   - handles 'https' scheme