Why does MATLAB 7.5 (R2007b) fail to start as an ActiveX / COM Server or show an error?

I am trying to use MATLAB 7.5 (R2007b) from another program. I do this through the automation server interface or through the MATLAB Engine. Both use ActiveX and I receive the following error:

 Can't start MATLAB engine

Answer 1

[MathWorks Support Team]

This problem can be related to the wrong MATLAB version or no MATLAB version at all being registered as the default Automation Server. To work around this issue, re-register MATLAB as an automation server by executing the following command from the MATLAB Command Window:

!matlab -regserver

[Usha Duddu]

Hi Alex

I understand you have a question on registering MATLAB as an automation server.

Please refer to the documentation link below that discusses about Registering MATLAb as an automation server using "matlab -regserver".

https://www.mathworks.com/help/matlab/matlab_external/register-matlab-as-automation-server.html

Alternatively you could use "regmatlabserver" command to register MATLAb as an Automation server from within MATLAB.

Feel free to MathWorks Technical Support in case of further questions.

Thanks

Usha