svnsync path not found

[Chris Evans]

Hi,

I'm having issues using svnsync between 2 HTTP repositories. All was working 
well, but now I get the following error when running "svnsync.exe synchronize 
https://server/svn/repo/";

        svnsync: 
'/svn/repo/PROJECTTest/trunk/PROJECT/Util/Test/TestSvn/TestCommitFile/ExistingFile.txt'
 path not found

That file looks fine using svn log and svn cat.I get the following errors on 
the target SVN server:

        Could not CHECKOUT resource /svn/ repo 
/!svn/ver/222731/PROJECTTest/trunk/PROJECT/Util/Test/TestSvn/TestCommitFile/ExistingFile.txt.
  [409, #0]

        Could not get created-rev of transaction node.  [404, #160013]

        File not found: transaction '222731-4rvu', path 
'/PROJECTTest/trunk/PROJECT/Util/Test/TestSvn/TestCommitFile/ExistingFile.txt'  
[404, #160013]

Attempting to find that transition on the source server fails with:

        svnlook: No such transaction

Running the syncsync again errors with a different transaction number.


Any ideas what could be causing this.
I'm using svn version 1.6.16 on VisualSVN Server 2.1.7

Thanks
Chris

*bypass*