In the latest build there seems to be an issue with the saved uCode in the ini and what is used/viewed via the settings dialog. In this video you will see how no matter how much you save the ucode it will revert make to what seems uCode=1 (Mario Kart) visually through the settings dialog but in the ini file remain the one you saved?
[youtube]http://www.youtube.com/watch?v=N4NJUSFdeTA[/youtube]