Hi MCMic,

Don't count too much on my participation on IRC. I don't have the time hanging there. I can do it on request but I won't come unless I want to poke a few old friends (and not forcefully speak about code. ;])
About the tile meshNameFromNeighbors() (The one chosen function), maybe you shouldn't throw yourself in fixing the lacking tile as a first candy, without willing to patronize you, of course.

But I think logging a warning when a mesh file couldn't be found, along with the mesh filename sought, and the neighbor types & fullness represented would be a great thing to make this more understandable.
Something like this:
- {l Code}: {l Select All Code}
The mesh tile file couldn't be found: Dirt_xxxxxx.mesh
Tile with following neighbors:
1 1 1
1 X 1
0 0 0
And make it load a default tile in this case would also be a start, I guess.
Could you do that?
Best regards,