For some reason some of the mod developers do not add the id element, this brings(at least for me) an annoying problem:
The game tries to find the id for the mod and fails in doing so, therefore it adds the address of where the mod is located (C:\Users\YOURUSERNAME\Zomboid\mods\MODNAME) then the game lists the game in the "loaded.txt file in the mods folder with this "default" id.
The game then recognizes the mod and lists it as loaded, but when you load a world and the mod doesn't work at all.
I came with a solution for this(it's really simple you should have figured it out by now):
Simply edit the mod.info file and add the id element to it, use the name of the mod, preferably.
It should look something like this: "id=NameOfTheMod"
To do this i used Notepad++, but i'm sure it works without it, simply right click the mod.info file, click Edit from the drop-down list and add the id element.