Andar, i have tried using both dlc and the regular importing option. Neither way has worked for me. And yeah, it gives me a transparency option window but no way to change it, unless of course I just don't know how to change it. I don't see any options in the window.
Susan, I would love to send you the files, but I don't want to get in trouble if it's not allowed. I'm almost wondering if they got corrupt while downloading. I should let everyone know I have used other resource packs from Steam, including other kinds of tilesets, and I've never had this problem before.
UPDATE: Ok, I changed the transparency color from black to white when importing the tiles and it worked. But I gotta say, it is really hard to tell the grass tiles apart from each other. Same goes for the water. I've read this is a problem with the resource pack from someone else's topic on the forums. Lame, but oh well.
Thanks everyone for helping me!