Error: The version resource does not correspond to the resource within the transaction.

I recently migrated my repository to an FSFS file system. Because I was also
changing the server name I did a clean checkout after the migration.
 
After the migrartion I've have many instances of the following error when
doing a commit.
 
Error: Commit failed (details follow):
Error: Your file or directory 'Memphis.csproj' is probably out-of-date
Error: The version resource does not correspond to the resource within the

Error: transaction. Either the requested version resource is out of date
(needs to be
Error: updated), or the requested version resource is newer than the
transaction root
Error: (restart the commit).

Yes, I did do an update before doing a commit.
 
I'm running the subversion 1.2.3 on Apache on a debian server . I'm using
TortoiseSVN 1.2.4
 
I can get around the problem by deleteing _svn\wcprops\*
 
For some reason it seems that only .csproj files are affected by this
problem, but I can't be 100% sure that this is the case.
 
Daniel F Garcia
Project manager

  <http://www.kobold.com.au/ksys-ani.gif>
Mobile: 0438 670 947
Phone: 07 3810 0000
Email: dgarcia@kobold.com.au
Address: Level 1, Commonwealth Bank Building, 143 Brisbane St, Ipswich Q
4305
Postal Address: PO Box 893 Ipswich Q 4305