Hey, for the people that have Nemo in non-standard location!!

As peterleinchen got it, I have indeed hardcoded the Nemo partition to be "/dev/mmcblkp04# in the menu selection logic!

When I made it I did not think that people would ever put Nemo somewhere else.

However, it is easy to correct:
Just edit your "/boot/menu/select_os_animated.sh", and find the function load_nemo()
On that function, replace the sed script "s/root\=\/dev\/mmcblk0p2/root\=\/dev\/mmcblk0p4/" with "s/root\=\/dev\/mmcblk0p2/root\=\/dev\/mmcblk0p7/", for example, if your Nemo is on partition#7