svn merger error- Unreadable path encountered; access denied

[Lloyd]

Hi,

I am trying out svn branching and merging. I have a repository named
MyRepo, to create a branch I have done the following

Structure of MyRepo is as follows
=========================
  MyRepo
    -> Branch
    -> Trunk
    -> Tags

First checked out the repository
========================
 svn checkout svn://svnserver/MyRepo

Then created a branch using
======================

svn copy svn://svnserver/MyRepo/trunk
svn://svnserver/MyRepo/Branch/TestMerge -m "test merging"

Then checked out the new branch to a new location (E:\br)
===========================================

 svn checkout svn://svnserver/MyRepo/Branch/TestMerge

Then Added a new file to this TestMerge folder, then added in to the svn
using svn add command, then commited it to the server.

Now I want to merge this change to the trunk using svn merge command, for
that I have checked out a new working copy (E:\ch), then executed the merge
command

svn merge svn://svnserver/MyRepo/Branch/TestMerge
svn://svnserver/MyRepo/trunk E:\ch\Trunk

But I get the following error, what am I doing wrong?

"svn: Unreadable path encountered; access denied"

Thanks,
  Lloyd