Invoking TestExecute via COM throws System.NullReferenceException: Object reference not set to an instance of an object.

Question

Hi All,My team is currently writing a VB.Net program that launches scripts via TestExecute controlled by the VB.Net app. We've followed the code written in the help file (can also be found here but doesn't have the VB.Net sample code )A simple copy/paste was done and the app was compiled, upon running. it threw the error:System.NullReferenceException: Object reference not set to an instance of an object.in the line of code here:Select Case IntegrationObject.GetLastResultDescription.Status&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Case TestComplete.TC_LOG_STATUS.lsOk&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.Windows.Forms.MessageBox.Show(Me, "The test run finished successfully.")&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Case TestComplete.TC_LOG_STATUS.lsWarning&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.Windows.Forms.MessageBox.Show(Me, "Warning messages were posted to the test log.")&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Case TestComplete.TC_LOG_STATUS.lsError&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.Windows.Forms.MessageBox.Show(Me, "Error messages were posted to the test log.")&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; End SelectIs there something we need to configure within TestExecute or Visual Studio?

pjageronimo · Answer

Correction:Sample vb.net source code is indeed in support page here

pjageronimo · Answer

Looks like it's taking too long to open my Project.

I've checked the code:

While IntegrationObject.IsRunning

Application.DoEvents()

End While

The code exited in the loop even though the unit script is not yet ran.

The property IsRunning doesn't work as expected

pjageronimo · Answer

I think i've cracked this... TestExecute throws unhandled error because the pjs and mds files are READONLY.Next... removing READONLY attribute of files and folders

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Invoking TestExecute via COM throws System.NullReferenceException: Object reference not set to an instance of an object.

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