Have you ever encountered this during a SVN update?
Summary of conflicts: Tree conflicts: 1
If so what you have at your hand is a conflict which has occurred due to conflicting file structure changes like file moves and deletions. You can force the removal of unwanted file with this command,
svn remove --force file-to-be-removed
Then conflict can be resolved using,
svn resolve --accept=working file-to-be-removed