1.8.9 server not letting friends join

[needminecrafthelp]

whenever my friends try to join they get the error "fatally missing blocks and items" and cannot join. Whenever i join the server its fine though, although i get some error messages in the chat. This is the problem file in my config folder:

(world does have lucky block mods included)

The following problems were encountered while loading the config files:
item_additions.cfg 'thrown' #17: Entry had wrong number of parts: '癤?'.

item_additions.cfg 'swords' #7: Entry had wrong number of parts (better check those underscores): 'ultra_sonic_long_sword_____?6쬵Ultra Sonic Long Sword_____diamond____280'.

general.cfg 'creative_menu_additions' #150: The following block or item doesn't seem to exist: 'lootplusplus:random_sword'.

general.cfg 'creative_menu_additions' #157: The following block or item doesn't seem to exist: 'lootplusplus:ultra_sonic_long_sword'.

general.cfg 'creative_menu_additions' #177: The following block or item doesn't seem to exist: 'lootplusplus:coralStone'.

recipes.cfg 'add_shaped' #4: The following block or item doesn't seem to exist: 'ootplusplus:crimson_helmet'.

recipes.cfg 'add_shaped' #11: Entry had wrong number of parts: '癤?'.

recipes.cfg 'add_shaped' #66: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Hitting Entity (Give to Entity)' #8: Couldn't find potion effect 'potioncore:drowning'

item_effects.cfg 'Hitting Entity (Give to Entity)' #12: Entry had wrong number of parts: 'lootplusplus:mixed.sizeable_slimy_scimitar_____-1_____{}_____1.0_____lppcondition testfor @p[r=0] _if_true_ lpptp @p[r=0] ~ ~ ~ ~ ~ ~ ~1 ~ _if_false_ tp @e[r=0,c=1] ~ ~4 ~'.

item_effects.cfg 'Hitting Entity (Give to Entity)' #13: Entry had wrong number of parts: 'minecraft:stick_____-1_____{LunariusH:true}_____1.0_____tellraw @a[r=16] "<LunariusH> Get off my lawn!"'.

item_effects.cfg 'Wearing Armor' #27: Couldn't find potion effect 'lootplusplus:step_up'

item_effects.cfg 'Wearing Armor' #113: Couldn't find potion effect 'potioncore:solid_core'

item_effects.cfg 'Held' #6: The following block or item doesn't seem to exist: 'lootplusplus:random_sword'.

item_effects.cfg 'Held' #9: The following block or item doesn't seem to exist: 'lootplusplus:ultra_sonic_sword'.

item_effects.cfg 'Held' #10: The following block or item doesn't seem to exist: 'lootplusplus:ultra_sonic_sword'.

item_effects.cfg 'Held' #11: Couldn't find potion effect 'potioncore:trueshot'

item_effects.cfg 'Held' #13: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #9: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #10: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #11: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #12: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #13: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.

item_effects.cfg 'Held' #14: The following block or item doesn't seem to exist: 'lootplusplus:mixed.zeus_thunder_gleve'.