Why do I receive an error of the form "Error 430: Class does not support Automation or does not support expected interface" when I try to instantiate MATLAB 7.0 (R14) as a COM object in my Visual Basic program?

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I am trying to call MATLAB as a COM object from Visual Basic. When I try to instantiate the object in my code, I receive an error of the form:
Error 430: Class does not support Automation or does not support expected interface.

Accepted Answer

MathWorks Support Team
MathWorks Support Team on 27 Jun 2009
This bug has been fixed in Release 14 Service Pack 2 (R14SP2). For previous releases, read below for any possible workarounds:
This error can occur when MATLAB is not correctly registered as a COM object with the Windows registry.
To fix the registry perform the following steps:
1. From the machine's command prompt run the command "matlab /unregserver"
2. Wait for MATLAB to open
3. Close MATLAB
4. From the machine's command prompt run the command "matlab /regserver"
5. Wait for MATLAB to open
6. Close MATLAB
This process should refresh the registry and allow the objects to be instantiated correctly.

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