The Directions for Collectables, Treasure Hunts, and Puzzles > BadGremlin Collection Esp Replacers are a bit unclear. The instruction say to not install the Individual ESPs and Optional Folder. I had to click on manual for the bain installer to find BGCollectibles.esp. When I just clicked next without clicking manual it installed an empty mod. After a bit of digging I re-enabled the simple installer plugin and reinstalled the mod to see that it added that esp without any prompt. I had previously disable the simple installer so I didn't have to dig through the installed mods and delete files/folders that the instructions say not to install. I could just untick what wasn't needed. So, I would imagine that this issue was a unique to me and may not need to be addressed. Just FYI if it comes up again.