Persistent error in dynamic contextual menu that disables normal menus

Hello.  I have been encountering a troublesome error (Igor 7 on the Mac), and I hope somebody might have a suggestion how to avoid it.  I am using a PopupContextualMenu, with the /N option to reference a menu definition.  That menu references a function to return a list of options.  The error comes in that function.  It seems that even though the menu hasn’t been invoked, the function gets executed after compilation and whenever the main Igor menus are selected.  So any error in the function’s execution throws up an error, and it prevents all use of the regular menus.  I can deal with this during development, but now I want to distribute the code, and I find this error prevents doing anything as soon as the procedure file is #included in a new experiment.  Most importantly, the user can't even execute the initialization function that would resolve the error.

 A simple example that reproduces the behavior is below.  In this case "w_List" doesn't exist yet, so myTextFn throws up an error, and I can't call my initFn from the Macros menu.  Has anyone any suggestions how to disable invoking that function to avoid triggering these errors.  Thanks in advance.

-Matthew