Mex file entry point is missing, path messed up in Matlab 2012a

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Nasser M. Abbasi
Nasser M. Abbasi 2012-12-1
评论： James 2015-5-22
FYI, I posted this question on comp.soft-sys.matlab
with Matlab 2012a, on windows 7, I noticed Matlab is going for windows files before matlab's for some commands:
EDU>> ver
Mex file entry point is missing. Please check the (case-sensitive)
spelling of mexFunction (for C MEX-files), or the (case-insensitive)
spelling of MEXFUNCTION (for FORTRAN MEX-files).
Invalid MEX-file 'C:\Windows\system32\version.dll':
so path is messed up:
EDU>> which ver
C:\Program Files (x86)\MATLAB\R2012a Student\toolbox\matlab\general\ver.m
EDU>> which input
C:\Windows\system32\input.dll
But I looked at my PATH in windows computer->Property, and I made sure Matlab is first thing. Restarted Matlab, and still the problem is there
My PATH from system:
C:\Program Files (x86)\MATLAB\R2012a Student\bin;C:\Program Files\Common Files\Microsoft etc..
So you see Matlab is first thing.
I also do not see System inside Matlab path command?
EDU>> findstr(path,'system32')
ans =
[]
EDU>> findstr(path,'windows')
ans =
[]
EDU>> userpath
ans =
''
MY question is: Where would Matlab be reading this wrong path from? Is there another place to fix the Matlab path?
related question:
http://www.mathworks.com/matlabcentral/newsreader/view_thread/285817
I rebooted windows. Problem is still there.
(ps. this forum is nice, I can edit my post here!)
thanks, --Nasser

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采纳的回答

Nasser M. Abbasi
Nasser M. Abbasi 2012-12-1
can one answer their own question here? since I found the solution. If not, I can delete this answer and add this as comment or something. Do not know the rules here.
I just do not know why it happened. But doing this command fixed it
userpath(path)
and now it works
which input
built-in (C:\Program Files (x86)\MATLAB\R2012a Student\toolbox\matlab\lang\input)
something cleared userpath somehow. I do not know how this happened. But I am happy now, Matlab is ok.
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Walter Roberson
Walter Roberson 2012-12-1
Adding your own answer, like you did, is good practice when you find a solution to a problem.

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更多回答（1 个）

Image Analyst
Image Analyst 2012-12-1
You might try the "restoredefaultpath" command and see if that fixes it.
  1 个评论
Nasser M. Abbasi
Nasser M. Abbasi 2012-12-1
编辑：Nasser M. Abbasi 2012-12-1
Thanks ImageAnalyst for the suggestion. Tried it. did not fix the problem. ALso restarted Matlab. no change, still points to system:
EDU>> restoredefaultpath
EDU>> which input
C:\Windows\system32\input.dll
also
EDU>> restoredefaultpath; matlabrc
EDU>> which input
C:\Windows\system32\input.dll

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