> > > > Changing the image dose not affect it but changing tile type dose. Further more it only seems to happens when I change the tile in question.

> > > So if you start with a tile of the correct type and replace the image, you end up with a working version of the final tile, by avoiding the bug.

> > "Yes" But before you say why don't you do that because this will only work with two of the tunnels (road and dirt) the train tunnel and water tunnel needs soom/most of the rest of the tile types changed.

> But at least that'd allow me to do a binary compare of the two files to find out the exact difference.

I am placed a file for down load on DeeZire Forum

http://www.deezire.net/modules.php?name=Forums&file=viewtopic&p=80974#80974
wwst04.ubn is WW tile.
testtype04.ubn is the modified tile with the problem.