@gremco
all 800x480 resolutions are working, this is a standard format and you find everything for this resolution. No changes needed or anything.
But I see you write you have WIN CE6 devices and try Primo2.4 - if I remember right, 2,4 is for android- I am not 100% sure, but 99%

Download from here a WIN CE Primo no matter what series, and look is it work -

Before you come to Maps and that this are checked from software, you must select a language, so maybe you have not right language in folder for the Primo version you try to run