simulink toolbox portability
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I have a toolbox for simulink that used to work fine with version 7.0.1 now I have 7.9.0 and it does not work anymore. On running the model it gives the following message "Invalid MEX-file 'I:\Matlab\ESP\NST_DENS.dll': The specified procedure could not be found." I have the above said file in the folder but it seems I need to develop it again?? How do I go about fixing this.
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Accepted Answer
Walter Roberson
on 10 Feb 2011
Did you switch from using 32 bit before to using 64 bit now? If so then the old dll would not work.
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Seth Popinchalk
on 10 Feb 2011
When MATLAB reports an Invalid MEX-file it usually means the file was compiled for a different platform (Win32 vs Win64) than the one you are running on. You recompile the file if you have the original source code.
Often for a file mymexfile.dll the source file is mymexfile.c.
To recompile it may be as simple as running the following command in the directory with the source file:
mex mymexfile.c
If the MEX file has additional dependencies your compile command will be more complicated. See the following technical note about MEX
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Kaustubha Govind
on 10 Feb 2011
Also, you can determine whether your DLL is 32-bit or 64-bit by using dumpin (http://support.microsoft.com/kb/177429) with the /headers option.
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