I found in some more debugging in Loadrunner that I can see HTTP responses and I found that there is an error message popping up in the HTTP requests when playing the script from the windows VuGen console, while that error is not popping up when replaying in the TruClient Firefox browser client.
Is there a way to add some Javascript to click OK on the error dialog to the Truclient UI as a step that deals with the response when playing in vugen client?