Addresses #1660.

I'm not sure exactly how this happens, but this should stop the error
from causing a crash.
sandpits fix initial commit
fisrt sandpits done
sandpits2
Merge branch 'master' into valleyfix
WIP
Merge branch 'master' into valleyfix
redo tacotown
WIP
sandpits WIP
Merge branch 'master' into valleyfix
Updated forest
Tilesheet correction
Fixed error with blocks
still WIP
Moving the pixels around

Still not happy with the result
WIP
Remove excess blocks
merge master
sandpits2