I have tested the file that you created and it opened successfully in two out of the three environments that I used. I was able to open it in DIAdem and Visual Studio 2010 (Using a cs Measurement Studio example). When I tried using LabWindows CVI, which is a c development environment I ran into some runtime errors. The errors told me that some properties were not correctly defined. I am looking more into it. I will let you know what I find.