matlab的问题：当我输入>> syms x;>>f=x*x 按回车后就出错,这是怎么回事啊?请大家帮帮

matlab的问题：当我输入>> syms x;>>f=x*x 按回车后就出错,这是怎么回事啊?请大家帮帮
错误信息：error_msg : maple: directory does not exist
------------------------------------------------------------------------
Segmentation violation detected at Sat Mar 14 22:49:56 2009
------------------------------------------------------------------------
Configuration:
MATLAB Version: 6.5.0.180913a (R13)
Operating System: Microsoft Windows XP
Window System: Version 5.1 (Build 2600: Service Pack 3)
Processor ID: x86 Family 6 Model 7 Stepping 6, GenuineIntel
Virtual Machine: Java 1.3.1_01 with Sun Microsystems Inc. Java HotSpot(TM) Client VM
(mixed mode)
Register State:
EAX = 0000047b EBX = 0000047b
ECX = 00df9fb0 EDX = 0ff107ed
ESI = 0ff107ec EDI = 00000000
EBP = 0000047b ESP = 00df9fe8
EIP = 0fe724f9 FLG = 00010206
Stack Trace:
This error was detected while a MEX-file was running. If the MEX-file
is not an official MathWorks function, please examine its source code
for errors. Please consult the External Interfaces Guide for information
on debugging MEX-files.
If it is an official MathWorks function, please
follow these steps in reporting this problem to The MathWorks so
that we have the best chance of correcting it:
1. Send this crash report to segv@mathworks.com for automated analysis.
For your convenience, this information has been recorded in:
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\matlab_crash_dump.2324
2. Also, if the problem is reproducible, send the crash report to
support@mathworks.com along with:
- A specific list of steps that will reproduce the problem
- Any M, MEX, MDL or other files required to reproduce the problem
- Any error messages displayed prior to this crash report
A technical support engineer will contact you with further information.
Thank you for your assistance. Please save your workspace and restart
MATLAB before continuing your work.
Error in ==> D:\vc,matlab,origin\matlab1.0\toolbox\symbolic\maplemex.dll
Error in ==> D:\vc,matlab,origin\matlab1.0\toolbox\symbolic\maple.m
On line 116 ==> [result,status] = maplemex(statement);
Error in ==> D:\vc,matlab,origin\matlab1.0\toolbox\symbolic\@sym\maple.m
On line 74 ==> [result,status] = maple(statement);
Error in ==> D:\vc,matlab,origin\matlab1.0\toolbox\symbolic\@sym\mtimes.m
On line 13 ==> X = maple(A,'*',B);
可是其他功能能用，除了符号运算····哈，我刚学这个，很好用的，喜欢
很？？？？ 啊，有谁遇到一样问题的吗？
我找到解决方法了：我下载的是iso，然后解压，运行，结果有些功能不能用； 但是若用虚拟光驱打开的话，就能用了。 很高兴，遇到一样问题的同学可以试一试这个方法。 谢谢你们啦！！！！！！！！！！！！！！！

syms x;>>f=x*x
可能有以下几个方面,你试一下：
1、可能你在装软件时,把一些重要的文件删了,解决办法：重装一遍.
2、你的MATLAB文件work设置的没有放在MATLAB指定的work文件夹,解决办法：改变目录途径.
3、如果还不行,你在m文件中运行；