错误号13-远程访问SVN,DAV_SVN失败

我的SVN存储库出现以下错误

<D:error>
<C:error/>
<m:human-readable errcode="13">
Could not open the requested SVN filesystem
</m:human-readable>
</D:error>

我已经按照 How to Geek 和 Ubuntu Community Page 但是没有成功。我甚至给了仓库 777 权限。

<Location /svn/myProject >

  # Uncomment this to enable the repository
  DAV svn

  # Set this to the path to your repository
  SVNPath /svn/myProject
  # Comments

  # Comments

  # Comments
  AuthType Basic
  AuthName "My Subversion Repository"
  AuthUserFile /etc/apache2/dav_svn.passwd

  # More Comments

</Location>

权限如下:

drwxrwsrwx 6 www-data webdev 4096 2010-02-11 22:02 /svn/myProject

和 svnadmin 验证目录

$svnadmin verify /svn/myProject/
* Verified revision 0.

我正在访问存储库

http://ipAddress/svn/myProject

编辑:Apache错误日志显示

[Fri Feb 12 13:55:59 2010] [error] [client <ip>] (20014)Internal error: Can't open file '/svn/myProject/format': Permission denied
[Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not fetch resource information.  [500, #0]
[Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not open the requested SVN filesystem  [500, #13]
[Fri Feb 12 13:55:59 2010] [error] [client <ip>] Could not open the requested SVN filesystem  [500, #13]

即使我确认了这个文件是ugo可读和可写的。

我做错什么了?