I have the same problem. To resolve it:

First delete kernel-power with the aplication for it in the system categorie. Reboot

Then, uninstall kernel-power-bootimg, and then reboot.

Next, install Linux kernel power in the Aplication Manager and then install bootimg also from the aplicacion manager. It will say you that there is a problem with multiboot-kernel-power, dont worry, thats ok.

Then reboot. You will have the multiboot active with your entries.

Bye!