MATLAB: Do I get various registry errors when trying to run Model Calibration Toolbox 4.1 (R2010b) on Windows Vista or Windows 7

When I execute MBCMODEL to start Model Calibration Toolbox, I see a popup GUI with the following error message:

 MBC has attempted to install the required system files but has encountered error.
 Error installing C:\Program Files\MATLAB\R2010b\toolbox\mbc\mbcguitools\ocx\system\mscomct2.ocx
 Error accessing registry for C:\Windows\system32\mscomct2.ocx.
 Could not increment registry counter.
 Error installing C:\Program Files\MATLAB\R2010b\toolbox\mbc\mbcguitools\ocx\system\mscomctl.ocx
 Error accessing registry for C:\Windows\system32\mscomctl.ocx.
 Could not increment registry counter.
 Error installing C:\Program Files\MATLAB\R2010b\toolbox\mbc\mbcguitools\ocx\system\mwmbccontrols.ocx
 Could not register the file C:\Program Files\MATLAB\R2010b\toolbox\mbc\mbcguitools\ocx\system\mwmbccontrols.ocx
 Error running DllRegisterServer function.

Best Answer

This issue is being caused by Windows UAC (User Account Control) blocking MBCMODEL and CAGE from installing ActiveX controls. It will happen on all Windows Vista or Windows 7 installs with UAC enabled. If you switch off UAC the first time when starting MBCMODEL/CAGE, it will install the activeX controls, then you can switch UAC back on.

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MATLAB: Do I receive errors when installing the Model-Based Calibration Toolbox

The error occurs because there are older versions of the reported files already on your machine. This should not cause any problems when running the Model-based Calibration Toolbox.

MATLAB: Does the ‘>>’ prompt not appear in the MATLAB Engine on Linux but does appear in Windows

The ability to have the ">>" prompt displayed is not available when using the MATLAB Engine API on Linux and UNIX systems.

There are no workarounds.

The MATLAB Engine on the Windows platform is implemented using the Microsoft COM interface whereas the Engine on UNIX and Linux communicates using pipes. As a result, the ">>" prompt will appear in Windows but not in Linux.

The ">>" prompt displayed in the engdemo.c example are printed explicitly by the C program. Open the engdemo.c program using the following commands and you will notice that the '>>' prompts are being manually displayed by a printf statement.

demofile = [matlabroot '/extern/examples/eng_mat/engdemo.c'];
copyfile(demofile, '.');
edit engdemo.c;

Best Answer

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MATLAB: Do I receive errors when installing the Model-Based Calibration Toolbox

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