Bit of a texture problem

So I updated my game to 1.5 after a long hiatus of not playing. Previously I used the 2k Texture pack (ver 1.3) but I updated to the newest version of the mod. This is what happened http://i41.tinypic.com/vhz6hh.jpg

Any idea on how to fix this? I'm on 296.10 nvidia drivers. Do I need to delete the old texture files from 1.3?