MATLAB: Do I receive the error “Unable to load mex file” when running a compiled application that uses Image Acquisition Toolbox 1.6 (R14)

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I have experienced an error with my compiled application that uses the Image Acquisition Toolbox compiled with MATLAB Compiler 4.0 (R14).

The Compiled application that uses the Image Acquistion Toolbox is working properly on the development machine. However, when running the same application on a target machine without MATLAB, I get the error message:

Unable to load mex file:

C:\imgdemo\imqacdemo03_mcr\toolbox\imaq\imaq\imaqmex.dll. The specified module could not be found.

??? Invalid MEX-file

'C:\imgdemo\imqacdemo03_mcr\toolbox\imaq\imaq\imaqmex.dll':The specified module could not be found.

Best Answer

This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, please read below for any possible workarounds:

We have verified that there is a bug in MATLAB Compiler 4.0 (R14) when using the Image Acquisition Toolbox.

The imaqmex.dll MEX-file depends on two secondary DLLs:

testmeaskit.dll

imaqframe.dll

These two DLLs are located in the "matlabroot"\bin\win32 directory. Also, there should be a "componentname"_mcr\bin\win32 directory created with at least these two DLLs in it.

However, since these two DLLs do not ship with the MCR, in order for the application to run correctly, "componentname"_mcr\bin\win32 should be added to the system path. This issue has been forwarded to our development staff for further investigation and should be fixed in a future release. For the time being, you have to manually add this directory to the system path on the target machine after installing the deployed application.

Related Solutions

MATLAB: Do I get the error “The specified module could not be found (126)” when running a compiled stand-alone that uses LOADLIBRARY to load a shared DLL that has been compiled using MSVC++ 2005

Copying the missing file msvcr80.dll to the application's folder does not work because the Microsoft Visual C/C++ Runtime files require Side-by-Side deployment.

Running a compiled stand-alone that loads a shared DLL that has been compiled with MSVC++ 2005 requires a manifest file for the executable, in order for the operating system to load the C/C++ runtime libraries correctly.

To work around this issue, create a file with the same name as your executable and the additional extension ".manifest". For example if your executable is called "MyTest.exe", create a new empty file called "MyTest.exe.manifest" in the same folder that contains the executable. Now open the file with a text editor and enter the following XML code in it:

 <?xml version='1.0' encoding='UTF-8' standalone='yes'?>
 <assembly xmlns='urn:schemas-microsoft-com:asm.v1' manifestVersion='1.0'>
   <dependency>
     <dependentAssembly>
       <assemblyIdentity type='win32' name='Microsoft.VC80.CRT' version='8.0.50727.762' processorArchitecture='x86' publicKeyToken='1fc8b3b9a1e18e3b' />
     </dependentAssembly>
   </dependency>
 </assembly>

Running the stand-alone application should now work correctly.

MATLAB: Do I receive an error message of “mclmcr.dll not found” while deploying the application on a target machine using the ‘MCRInstaller.exe’ in MATLAB 7.0.4 (R14SP2)

This behavior is observed in MATLAB due to a corrupt installation of the MCR.

To work around this issue, add the <mcrroot>\v72\bin\win32 folder to the system path, where mcrroot corresponds to the directory into which the MCR is installed. However, this may cause problems with other versions of MCR since the file 'mclmcrrt72.dll', which calls the 'mclmcr.dll', is version specific.

Hence, the other option is to reinstall the MCR using 'MCRInstaller' on the target machine.

You can find the 'MCRInstaller.exe' in the following directory:

$MATLAB\toolbox\compiler\deploy\win32

(where $MATLAB is the MATLAB root directory as returned by the following command:

matlabroot

)

Best Answer

Related Solutions

MATLAB: Do I get the error “The specified module could not be found (126)” when running a compiled stand-alone that uses LOADLIBRARY to load a shared DLL that has been compiled using MSVC++ 2005

MATLAB: Do I receive an error message of “mclmcr.dll not found” while deploying the application on a target machine using the ‘MCRInstaller.exe’ in MATLAB 7.0.4 (R14SP2)

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