Issue (The better the description the better i can solve the issue):

Client crushes at last stages of loading
net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Improved Mobs (improvedmobs)Caused by: java.lang.NullPointerException at com.flemmli97.improvedmobs.handler.config.EquipmentList$WeightedItemstackList.access$000(EquipmentList.java:319)

Steps to reproduce:

Just updated client with Improved Mobs 1.6.0, lunch without troubles, then changed json file, and then lunch again (with crush).

Affected Versions (Latest is NOT a version):

• Minecraft: 1.12.2
• Forge: 14.23.5.2847
• TenshiLib: 1.2.3
• Improved Mobs: 1.6.0

Other Mods (If you think it might be cause of an incompability):

Enigmatica2:Expert pack https://www.curseforge.com/minecraft/modpacks/enigmatica2expert

Logs (Use a site like pastebin, gist etc. DONT COPY PASTE THE LOG IN HERE):

json: https://pastebin.com/cufjsqmH
cfg: https://pastebin.com/hhjiswNL
log: https://pastebin.com/CafdVd8L