So I just today got my Sansa e250, and of course, what did I do first? Put Rockbox on it

. Everything seems to be going great, except the skins I download dont seem to be working. In fact, the only one that is lining up correctly is Cabbie, whereas Iphone (REALLY sexy looking from the screenie), DockPodAA and COWON do not.
I select the .wps, then go to "browse themes" and apply them, but when I go to "Now Playing" or whatever, all I get is the mp3's name and those two vertical lines (left/right audio out). The background changes though...
Im not exactly sure what Im doing wrong, but I am also a total freakin newbie, and I may just be missing some "use ThemeX" setting. Any advice/info/painfully obvious info?