在安装devel 模块时，出现错误如下：
- Failed to save file due to error "The specified file 'temporary://fileAYLcwy' could not be copied because the destination directory is not properly configured. This may be caused by a problem with file or directory permissions."
- 2 translation files could not be imported. See the log for details.
解决办法： 编辑settings.php 文件 ，把640行的#号注释掉，tmp 前面的 \ 去掉就可以了。
