http://forum.minetest.net/viewtopic.php?pid=90740#p90740
I took a verbose log, but it is huge. Maybe let me know what term to search for.
Bug basically is that trying to make a torch with charcoal made from burning wood gives me an unknown block. Charcoal works fine in the furnace, however.
Using Minetest 4.6.
Mods I currently have going are as follows.
Loading mods: default bucket creative doors dye fire stairs vessels wool legacy give_initial_stuff external_legacy wool vessels stairs screwdriver plants_lib poisonivy junglegrass flowers_plus moreblocks moretrees fire dye dplus doors default creative bucket animalmaterials mobf mobf_settings mob_slime mob_ostrich mob_oerkki mob_npc mob_guard mob_archer barn animal_wolf animal_vombie trap animal_sheep animal_rat animal_gull animal_fish_blue_white animal_dm animal_deer animal_creeper animal_cow animal_clownfish animal_chicken animal_big_red
(It would appear the animals mod loads all the animals as separate mods as well. Apropos of nothing as far as this thread is concerned...)
Let me know what else might be helpful for your troubleshooting.