It seems that the gconf Python bindings are not available on every installation of pymaemo. Thus many users (mainly OS 2008) were not able to run the MediaBox media center. This release is for you!
MediaBox 0.90.1 falls back to using gconftool-2, if no gconf bindings are available. As a side-result, version 0.90.1 will now also start on the Nokia 770 with OS 2006 and sorta works (kinetic scrolling looks incredibly smooth on the 770, actually smoother than on the N800, but the 770 will choke on too many thumbnails for now).
Thanks to all those who reported problems and helped me locate the gconf bug.