I've been getting random mass tree 'die-offs' within an hour of placing the saplings.

There doesn't seem to be any correlation between the die-offs, and the biome they're placed on, nor is it consistant. I tend to place saplings in long rows, and the dead trees are in the 20 to 30 range.

P.S. - your mod is used in conjunction with the Eco-Tree Mod. (And using 0.14.9); and no, this event has not happened in any previous games.

In config.lua file line 12
DEFAULT_TREE = "dead-grey-trunk"

replace with
DEFAULT_TREE = "tree-01"

See if that fixes your problem?

Thanks, your fix appears to have worked.

(OTOH, apparently there's a bug with another that's been up-dated... see my other post.)

Sweet
I believe that your main problem was to do with the new code that I implemented to make the regrowth blend in better with the surrounding trees. Because I put a limit on the max distance the game will search for a tree.

In config.lua file line 10
MAX_SEARCH_RADIUS = 128

Try bumping the 128 up, if you can see how high you can set this number before you start to experience FPS/UPS degradation.