matlab问题 MATLAB Toolbox Path Cache is out of date and is not being used.

题目

matlab问题 MATLAB Toolbox Path Cache is out of date and is not being used.
Warning:MATLAB Toolbox Path Cache is out of date and is not being used.
Type 'help toolbox_path_cache' for more info.
Warning:MATLAB did not appear to successfully set the search path.To avoid this
warning the next time you start MATLAB,use
to help troubleshoot the "pathdef.m" file.To recover for this session
of MATLAB,type "restoredefaultpath;matlabrc".
Warning:Duplicate directory name:E:\matlab\toolbox\local.

答案

照提示键入
>>Type 'help toolbox_path_cache' for more info
是一个文档.
看到这里：
To enable this feature,
* Start MATLAB
* Open the Preferences Dialog under the File menu
* Click on the word "General"
* Check the "Enable toolbox cache" item
前往‘General’看个究竟
发现有一个Update Toolbox Path Cache 按钮
按一下该按钮重新启动matlab发现错误提示没了,好,问题解决.