This is just a very small tip for anyone else who has had a problem with beryl crashing out or reverting to a standard window manager when you set 'beryl-manager' to run from startup.(Basically, I've found when I want kiba-dock and beryl to load automatically at login, sometimes beryl doesn't load properly and I'm left with large black space on the bottom of the screen where kiba-dock loads)
by creating a pause between loading beryl and kiba I was able to load both applications perfectly, with no problems since. I created a script:
save this as startupscript.sh then make sure it's executable by:
Remove kiba-dock and beryl-manager from your sessions list, and add ~/startupscript.sh
chmod ugw+x startupscript.sh
Reboot, and it should just work.