The following table shows diagnostic messages you might encounter, probable causes for the message, and suggested solutions.
See the following table for information about some diagnostic messages.
Diagnostic Messages and Suggested Solutions
| Message | Probable Cause | Suggested Solution |
|---|---|---|
LoadLibrary(" | You may get this error message while registering the project DLL from the DOS prompt. This can occur if the MATLAB® Runtime is not on the system path. | |
Error in | This is often caused by |
( |
Error in VBAProject: ActiveX component can't create
object. |
| If the DLL is not registered,
( |
object ref not set to instance of an object | This occurs when an object that has not been instantiated is called | Instantiate the object. |
Error in VBAProject: Automation error The specified
module could not be found. | This usually occurs if MATLAB is not on the system path. | See Failure to Find MATLAB Runtime Files. |
Showing a modal dialog box or form when the application
is not running in UserInteractive mode is not a valid operation. Specify
the ServiceNotification or DefaultDesktopOnly style to display a notification
from a service application. | This warning occurs when ASP.NET code tries to bring up a dialog box. If occurs because | Work around this problem by doing the following:
|
Use this enhanced diagnostic feature to troubleshoot problems that occur specifically during MATLAB code execution.
To implement this feature, use .NET exception handling to invoke the MATLAB function inside of the .NET application, as demonstrated in this try-catch code block:
try
{
Magic magic = new Magic();
magic.callmakeerror();
}
catch(Exception ex)
{
Console.WriteLine("Error: {0}", exception);
}
When an error occurs, the MATLAB code stack trace is printed before the Microsoft® .NET application stack trace, as follows:
... MATLAB code Stack Trace ...
at
file H:\compiler\g388611\cathy\MagicDemoCSharpApp\bin\Debug\
CalldmakeerrComp_mcr\compiler\g388611\ca
thy\MagicDemoComp\dmakeerror.m,name
dmakeerror_error2,line at 14.
at
file H:\compiler\g388611\cathy\MagicDemoCSharpApp\bin\Debug\
CalldmakeerrComp_mcr\compiler\g388611\ca
thy\MagicDemoComp\dmakeerror.m,name
dmakeerror_error1,line at 11.
at
file H:\compiler\g388611\cathy\MagicDemoCSharpApp\bin\Debug\
CalldmakeerrComp_mcr\compiler\g388611\ca
thy\MagicDemoComp\dmakeerror.m,name dmakeerror,line at 4.
at
file H:\compiler\g388611\cathy\MagicDemoCSharpApp\bin\Debug\
CalldmakeerrComp_mcr\compiler\g388611\ca
thy\MagicDemoComp\calldmakeerror.m,name
calldmakeerror,line at 2.
... .Application Stack Trace ...
at MathWorks.MATLAB.NET.Utility.MWMCR.EvaluateFunction
(String functionName, Int32 numArgsOut, Int
32 numArgsIn, MWArray[] argsIn)
at MathWorks.MATLAB.NET.Utility.MWMCR.EvaluateFunction
(Int32 numArgsOut, String functionName, MWA
rray[] argsIn)
at CalldmakeerrComp.Calldmakeerr.calldmakeerror() in
h:\compiler\g388611\cathy\MagicDemoComp\src\
Calldmakeerr.cs:line 140
at MathWorks.Demo.MagicSquareApp.MagicDemoApp.Main(String[]
args) in H:\compiler\g388611\cathy\Ma
gicDemoCSharpApp\MagicDemoApp.cs:line 52