Well for the pack that it isn' t work with, that is "Paper Pixels" and it isn't using a 16x16 tile sizing. It uses 8x8 tiles. The "pixels per unit" setting is set to 16, just change that to 8 for "Paper Pixels". That should fix your problem.
I don't use unity so if "pixels per unit" setting doesn't fix it then you will have to do some searching for how to change the tile sizing.
Cartoon Classic uses 16x16 tiles, so it should work with the default.
Hope that helped.