Is it possible to interrogate an application that is on a shared drive? I have tried and when I start the interogation the application pops up but the interrogation window disappears and the Stop Interrogation button turns back into Start Interrogation.
This likely means that the application you have in the Path, is launching another application that is not a child of it. You can use a tool like Process Explorer to identify the hierarchy and determine if the application you launch is really launching another application and is not a child of the first. If this is the case, you would use the StartMethod of "StartAndWait" to launch the application in the "Path" and hook the application listed in the TargetPath.
That means that the exe you have specified in the target path did not start. It looks like you're trying to interrogate explorer.exe though. That is not an application really, nor one you can interrogate (since it is always running and part of Windows). What are you trying to automate with Windows Explorer?