I've had the same problem for a while now. I create a smart playlist with a bunch of movies in (set to play in random order).
The first item plays fine but when it finishes or when I click play next it goes back to the playlist screen with a message saying "cant find a next item to play"
I'm using the latest nightly build (08/10/11 - e330173) but tend to update every few days & its not worked for a while. I'm on Windows 7 64bit SP1 although I have had the same problem on a Windows 7 3bit machine too.
PC Info - Athlon Dual Core 4450, 3GB Ram, ATI Radeon HD2400 Pro, Realtek onboard sound.
Log can be found below.
And here is a playlist which which is giving me problems (though there are others).
I did notice that someone else has this problem too but they are running XBMC on Linux http://forum.xbmc.org/showthread.php?tid=108668
Thanks in advance to anyone who can help & sorry if its just something stupid I'd doing wrong