Although the add event dialog in the IDE is quite explicit about the preference in using the ‘Shown’ event over the ‘Open’ event in executing code for a web app page. More seasoned programmers would probably tend to choose the open event to set up controls or a layout of a web app page. This has caused me some major drama by not following the RTFM rule (programming 101). Placing the wrong type of code in the open event can cause recurrent execution of code and eventually stack overflows as a task gobbles up all of the available memory. I was plagued with stack overflow errors while setting up a simple page with just 6 controls on it. Once I cut and pasted the open event code in the ‘shown’ event. Problem solved.