Svn 无法运行与关联的WC DB工作队列

我在尝试svn签出时遇到问题。我创建一个空目录，右键单击，然后SVN签出。我得到以下错误：

Error: Failed to run the WC DB work queue associated with '\\path_to_file\  
Error:  more_path_to_file\trunk', work item 1 (file-install  
Error:  trunk/SQL_code.sql 1 0 1 1)  
Error: Can't open file '\\path_to_file\more_path_to_file\.svn\pristine\a6\a6c521066216c31abc949c92e38229bd0872dadd.svn-base':  
Error:  Access denied.  

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