Whenever I place a ranch block onto the world it crashes the world, and whenever it loads into the world it crashes, when I remove the ranch block the crashes stop. ()
Description: Ticking block entity

java.lang.NoClassDefFoundError: Could not initialize class com.pixelmonmod.pixelmon.entities.pixelmon.EntityBreeding
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.trySpawnPokes(TileEntityRanchBlock.java:549)
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.func_73660_a(TileEntityRanchBlock.java:166)
at net.minecraft.world.World.func_72939_s(World.java:1832)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:613)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:767)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Thread.java:745)

Need full crash log

---- Minecraft Crash Report ----
// There are four lights!

Time: 10/2/19 8:52 PM
Description: Ticking block entity

java.lang.NoClassDefFoundError: Could not initialize class com.pixelmonmod.pixelmon.entities.pixelmon.EntityBreeding
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.trySpawnPokes(TileEntityRanchBlock.java:549)
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.func_73660_a(TileEntityRanchBlock.java:166)
at net.minecraft.world.World.func_72939_s(World.java:1832)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:613)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:767)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Server thread
Stacktrace:
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.trySpawnPokes(TileEntityRanchBlock.java:549)
at com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock.func_73660_a(TileEntityRanchBlock.java:166)

-- Block entity being ticked --
Details:
Name: pixelmon:ranch_block // com.pixelmonmod.pixelmon.blocks.tileEntities.TileEntityRanchBlock
Block type: ID #261 (tile.ranch // com.pixelmonmod.pixelmon.blocks.ranch.BlockRanchBlock)
Block data value: 9 / 0x9 / 0b1001
Block location: World: (1313,65,1785), Chunk: (at 1,4,9 in 82,111; contains blocks 1312,0,1776 to 1327,255,1791), Region: (2,3; contains chunks 64,96 to 95,127, blocks 1024,0,1536 to 1535,255,2047)
Actual block type: ID #261 (tile.ranch // com.pixelmonmod.pixelmon.blocks.ranch.BlockRanchBlock)
Actual block data value: 9 / 0x9 / 0b1001
Stacktrace:
at net.minecraft.world.World.func_72939_s(World.java:1832)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:613)

-- Affected level --
Details:
Level name: New World1
All players: 1 total; [EntityPlayerMP['Zepolniwde'/6, l='New World1', x=1315.36, y=65.00, z=1785.77]]
Chunk stats: ServerChunkCache: 885 Drop: 0
Level seed: -2949720368981105971
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: World: (204,64,164), Chunk: (at 12,4,4 in 12,10; contains blocks 192,0,160 to 207,255,175), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 25671 game time, 25671 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 142901 (now: false), thunder time: 84811 (now: false)
Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:767)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 423346776 bytes (403 MB) / 1912602624 bytes (1824 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
FML: MCP 9.42 Powered by Forge 14.23.4.2705 5 mods loaded, 5 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State | ID | Version | Source | Signature |
|:--------- |:--------- |:------------ |:--------------------------------------- |:---------------------------------------- |
| UCHIJAAAA | minecraft | 1.12.2 | minecraft.jar | None |
| UCHIJAAAA | mcp | 9.42 | minecraft.jar | None |
| UCHIJAAAA | FML | 8.0.99.99 | forge-1.12.2-14.23.4.2705.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJAAAA | forge | 14.23.4.2705 | forge-1.12.2-14.23.4.2705.jar | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| UCHIJAAAA | pixelmon | 7.0.8 | Pixelmon-1.12.2-7.0.8-universal (1).jar | None |

Loaded coremods (and transformers):
GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [EntityPlayerMP['Zepolniwde'/6, l='New World1', x=1315.36, y=65.00, z=1785.77]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'fml,forge'

Thanks for the report. Going by recent other reports, I've passed this along to internal. Keep an eye on the ticket status to see what's up.

(for now, update the server's Forge to 2838 or newer -- anything earlier than 2809 will cause a bunch of other issues as well)

This has now been fixed for the upcoming version! Closing.