Crash!?

---- Minecraft Crash Report ----

WARNING: coremods are present:
Contact their authors BEFORE contacting forge

// Don't do that.

Time: 07-08-16 20:21
Description: Exception in server tick loop

java.lang.IllegalArgumentException: bound must be positive
    at java.util.Random.nextInt(Random.java:388)
    at mod.mcreator.mcreator_raspberryBush.generateSurface(mcreator_raspberryBush.java:70)
    at mod.mcreator.Extras.generate(Extras.java:183)
    at net.minecraftforge.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:113)
    at net.minecraft.world.chunk.Chunk.func_186034_a(Chunk.java:1006)
    at net.minecraft.world.chunk.Chunk.func_186030_a(Chunk.java:988)
    at net.minecraft.world.gen.ChunkProviderServer.func_186025_d(ChunkProviderServer.java:157)
    at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:297)
    at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:173)
    at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:196)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:429)
    at java.lang.Thread.run(Thread.java:745)

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

-- System Details --
Details:
    Minecraft Version: 1.9.4
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_25, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 1355467368 bytes (1292 MB) / 1850212352 bytes (1764 MB) up to 1908932608 bytes (1820 MB)
    JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2048M -Xms2048M
    IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
    FML: MCP 9.28 Powered by Forge 12.17.0.1990 Optifine OptiFine_1.9.4_HD_U_B6 4 mods loaded, 4 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UCHIJAA    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
    UCHIJAA    FML{8.0.99.99} [Forge Mod Loader] (forge-1.9.4-12.17.0.1990.jar) 
    UCHIJAA    Forge{12.17.0.1990} [Minecraft Forge] (forge-1.9.4-12.17.0.1990.jar) 
    UCHIJAA    Extras{0.0.1} [Extras] (Extras.zip) 
    Loaded coremods (and transformers): 
    GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
    Profiler Position: N/A (disabled)
    Player Count: 0 / 8; []
    Type: Integrated Server (map_client.txt)
    Is Modded: Definitely; Client brand changed to 'fml,forge'
    OptiFine Version: OptiFine_1.9.4_HD_U_B6
    Render Distance Chunks: 32
    Mipmaps: 4
    Anisotropic Filtering: 1
    Antialiasing: 0
    Multitexture: false
    Shaders: null
    OpenGlVersion: 4.5.13399 Compatibility Profile Context 15.201.1151.1008
    OpenGlRenderer: AMD Radeon HD 5670
    OpenGlVendor: ATI Technologies Inc.
    CpuCount: 4