I've installed the mod and after enabling "Loader" in the Mods Settings, I've started a new game and I still can't find the research. I've cheated my way to a filter inserter and I'm unable to find it there either.
Doesn't work for me, unfortunately. I ended up installing Loader Redux to get it to show. I've tried removing both mods (Loader Redux & Early Riser) then installing only Early Riser, starting a fresh map, and the Loader is not part of the technology...
Okay, I've setup my mods like yours. I ensured the "Enable Loaders" was set on the mod settings (requires a restart, since it is in the startup settings). Since you are playing Sea Block, you are required to complete the required technologies (crush stiratite, basic circuit board, wood processing and laboratory before you can start researching logistics (which probably shouldn't be your first red science research, but probably second...). Once Logistics finishes, you will see the loader on the first tab right under the wooden chest and iron chest and above the 3 inserters (burner, inserter, fast inserter)
I started a new map and I was able to cheat myself to some red-science and after researching logistics, I got the loader, thanks.
The remaining issue is that on my "old" (that is, a week or so) sea block map, after removing loader-redux, my loaders got replaced by "yours", but they don't appear in the crafting menu/FNEI etc. But I still have the items in my inventory/on-ground. Got any ideas on why? Would you like the save-game?