Arch Linux LXDE pcmanfm.conf issue?

I'm running Arch Linux with LXDE and SLIM. It used to work, but I did an update, and now when I run exec ck-launch-session startlxde (from cli or SLIM), it gives me an error that says something along the lines of "Missing pcmanfm.conf", and it won't start. I have to manually start Arch in runlevel 3 and type startx to get to my desktop which, btw, removed my wallpaper? Idk if that helps or not... I'd like to get this fixed though. Thanks.