无法在Tortoise Svn中制作标签

Question

当我尝试制作标签时，我收到此错误

我不明白这意味着什么。

这是Ankh给我的东西

SharpSvn.SvnSystemException: Commit failed (details follow): ---> SharpSvn.SvnSystemException: could not begin a transaction
   --- End of inner exception stack trace ---
   at SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, SvnException error, Object targets)
   at SharpSvn.SvnClientArgs.HandleResult(SvnClientContext client, svn_error_t* error, Object targets)
   at SharpSvn.SvnClient.Commit(ICollection`1 paths, SvnCommitArgs args, SvnCommitResult& result)
   at Ankh.Services.PendingChanges.PendingChangeHandler.<>c__DisplayClass1b.<Commit_CommitToRepository>b__19(Object sender, ProgressWorkerArgs e)
   at Ankh.ProgressRunnerService.ProgressRunner.Run(Object arg)