svn出错：Error: File or directory '.' is out of date; try updating

今天做完了项目在提交的时候，svn突然爆了下面的错误：?Error: Commit failed (details follow):?
Error: File or directory '.' is out of date; try updating?
Error: resource out of date; try updating?
Finished!:?
赶紧Google各种解决方法和大家分享：?
删除根目录下.svn下面的all-wcprops文件就OK了。

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