Hello Dustin,

I tried to reproduce catching an unhandled exception using a sample AddIn
(created using a VS wizard), but it does not seem to work.

When I click on MyAddIn1 from the Tools menu, I see the "Exec" message box,
but then nothing else occurs (no messagebox - nothing).
(I can debug the addin and see the exception being thrown, but after the
throw it is lost in unmanaged code, and I never hit the breakpoint on the
first line of the unhandled exception handler).

I tried throwing an exception from my package and this is not caught either
(it goes to the regular VS global error handler).

Here is my Toolbar command for my addin:

        public void Exec(string commandName, vsCommandExecOption executeOption,
ref object varIn, ref object varOut, ref bool handled)
        {
            handled = false;
            if(executeOption == vsCommandExecOption.vsCommandExecOptionDoDefault)
            {
                if(commandName == "MyAddin1.Connect.MyAddin1")
                {
                    MessageBox.Show("Exec");
                    throw new InvalidOperationException();
                    handled = true;
                    return;
                }
            }
        }

First line of OnConnection():

        public void OnConnection(object application, ext_ConnectMode connectMode,
object addInInst, ref Array custom)
        {
            AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(CurrentDomain_UnhandledException);

The unhandled exception handler:

        void CurrentDomain_UnhandledException(object sender, UnhandledExceptionEventArgs
e)
        {
            if (e.ExceptionObject == null)
                return;
            if (!e.ExceptionObject.GetType().IsSubclassOf(typeof(Exception)))
                return;
            if (e.ExceptionObject.GetType() == typeof(System.Threading.ThreadAbortException))
                return;

            Exception lException = (Exception)e.ExceptionObject;

            MessageBox.Show(lException.Message);       
        }