Why do I receive an "Unspecified error" for my ASP.NET application that calls a MATLAB Builder for COM/.NET component?

I have created a COM/.NET component using MATLAB Builder for COM/.NET to generate a MATLAB figure for my ASP.NET application. I followed the example described in Solution 1-2EETRY listed below, and I notice that when I call my COM/.NET component multiple times from my ASP.NET application, I observe the following error:

 Unspecified error

instead of a MATLAB plot. This error may happen sporadically and is not always reproducible.

Answer 1

[MathWorks Support Team]

The cause of this error is rooted in the way that ASP.NET applications do garbage collection. In order to resolve this error, be sure to insert:

close all force;

as the last line of code for the M-function that you are compiling into a COM/.NET component.