SVN "Already Locked Error"

I had the same problem. This problem is easily solved if you issue the Cleanup command from AnkhSVN.

If your SVN repository is locked by AnkhSVN, just use "cleanup" command from AnkhSVN to release the lock! ;)

After discussing with the hosting of my SVN repository they gave me the following answer.

Apparently my repository is replicated to a remote repository using SVNSYNC. SVNSYNC has known limitations with enforcing locking across the replicated repositories and this is where the problem lies.

The locks were introduced by the AnkhSVN plugin in Visual Studio.

As the locks appears to be on the remote repository this explains why I can't actually see them using SVN commands.

The locks are being removed via the hosting company and hopefully all will soon be well again.